Bromine Water Answers
What is the best way to display an average results for the amount of bromine water used in an experience?
Q. Its for a science work I am doing level gcse
Asked by SeeByHer - Sun Feb 22 09:11:40 2009 - Chemistry - 1 Answers - Comments
A. Are you repeating the experi MENT multiple times? If so, to get the average, you add up all the amounts of Br water used, then divide by the number of times you did the experiment.
Answered by Huwbutts - Sun Feb 22 16:19:22 2009
Q. Its for a science work I am doing level gcse
Asked by SeeByHer - Sun Feb 22 09:11:40 2009 - Chemistry - 1 Answers - Comments
A. Are you repeating the experi MENT multiple times? If so, to get the average, you add up all the amounts of Br water used, then divide by the number of times you did the experiment.
Answered by Huwbutts - Sun Feb 22 16:19:22 2009
Will the methyl red oxidized by the bromine water?
Q. If the methyl red is oxidized by bromine, the red color will be decolorized?
Asked by Matt S - Tue Jan 29 09:14:19 2008 - Chemistry - 1 Answers - Comments
A. Methyl red does in fact contain an azo group -N=N-, so it stands to reason that bromine would add to the double bond. I would expect this to destroy the red color, since it disconnects the two aromatic rings with respect to conjugation. But don't take my word for any of this.
Answered by - Tue Jan 29 11:22:04 2008
Q. If the methyl red is oxidized by bromine, the red color will be decolorized?
Asked by Matt S - Tue Jan 29 09:14:19 2008 - Chemistry - 1 Answers - Comments
A. Methyl red does in fact contain an azo group -N=N-, so it stands to reason that bromine would add to the double bond. I would expect this to destroy the red color, since it disconnects the two aromatic rings with respect to conjugation. But don't take my word for any of this.
Answered by - Tue Jan 29 11:22:04 2008
What are the equations for the reactions of 1-hexene with pure bromine and 1-hexene with bromine water?
Q. Also the equation for 1-hexene and potassium manganate (VII) solution. These should be three difffernt equations acoording to the question. I also need to name the organic compound formed in the first two (bromine related) equations.
Asked by blackninjagal - Sat Oct 29 12:39:22 2011 - Chemistry - 2 Answers - Comments
A. 1) 1-hexene + Br2 -> 1,2-dibromohexane 2) 1-hexene + Br2/H2O -> 1-bromo-2-hexanol 3) 1-hexene + KMn O4 (cold) -> 1,2-hexanediol 3.5) 1-hexene + KMn O4 (hot) -> pentanoic acid + CO2
Answered by Dr OChem - Sun Oct 30 22:29:37 2011
Q. Also the equation for 1-hexene and potassium manganate (VII) solution. These should be three difffernt equations acoording to the question. I also need to name the organic compound formed in the first two (bromine related) equations.
Asked by blackninjagal - Sat Oct 29 12:39:22 2011 - Chemistry - 2 Answers - Comments
A. 1) 1-hexene + Br2 -> 1,2-dibromohexane 2) 1-hexene + Br2/H2O -> 1-bromo-2-hexanol 3) 1-hexene + KMn O4 (cold) -> 1,2-hexanediol 3.5) 1-hexene + KMn O4 (hot) -> pentanoic acid + CO2
Answered by Dr OChem - Sun Oct 30 22:29:37 2011
Can I prepare silver bromide using bromine water and silver nitrate?
Q.
Asked by priyanka b - Tue Oct 20 06:24:31 2009 - Chemistry - 1 Answers - Comments
A. No. Use potassium bromide and silver nitrate. Alternatively, you could use silver and bromine as elements, but that's harder to pull off.
Answered by Soup - Tue Oct 20 07:45:11 2009
Q.
Asked by priyanka b - Tue Oct 20 06:24:31 2009 - Chemistry - 1 Answers - Comments
A. No. Use potassium bromide and silver nitrate. Alternatively, you could use silver and bromine as elements, but that's harder to pull off.
Answered by Soup - Tue Oct 20 07:45:11 2009
why does bromine water and potassium iodine combined result in colour change?
Q. and when Br is combined with potassium chloride it results in no colour change?
Asked by - Tue Nov 15 12:40:22 2011 - Chemistry - 1 Answers - Comments
Q. and when Br is combined with potassium chloride it results in no colour change?
Asked by - Tue Nov 15 12:40:22 2011 - Chemistry - 1 Answers - Comments
explain why bromine water helps to distinguish between an alkane and alkene?
Q. this is for my chemisty work for tomorrow. so can someone please help me? thanks...
Asked by - Thu Oct 13 16:45:16 2011 - Botany - 1 Answers - Comments
A. do you mean alkaline
Answered by - Thu Oct 13 16:48:04 2011
Q. this is for my chemisty work for tomorrow. so can someone please help me? thanks...
Asked by - Thu Oct 13 16:45:16 2011 - Botany - 1 Answers - Comments
A. do you mean alkaline
Answered by - Thu Oct 13 16:48:04 2011
How bromine water and dilute alkaline KMn O4 are used to test for alkenes?
Q.
Asked by - Wed Jul 13 04:47:11 2011 - Chemistry - 2 Answers - Comments
Q.
Asked by - Wed Jul 13 04:47:11 2011 - Chemistry - 2 Answers - Comments
Can anyone briefly explain why Bromine water is an equlibrium mixture?
Q. Thank you very much i wouls be very glad if you answer this Q...Xo Xo X
Asked by SecretSmile c: - Sat Jun 7 09:59:28 2008 - Chemistry - 2 Answers - Comments
A. forward reaction = reverse reaction Br2(aq) = Br2(g) + H2O(l) Bromine solution = Bromine vapour + Water. Bromine water is an equilibrium mixture because, the amount of bromine gas dissolving into the water is equal to the amount of bromine gas leaving the solution.
Answered by Adil - Sat Jun 7 10:23:15 2008
Q. Thank you very much i wouls be very glad if you answer this Q...Xo Xo X
Asked by SecretSmile c: - Sat Jun 7 09:59:28 2008 - Chemistry - 2 Answers - Comments
A. forward reaction = reverse reaction Br2(aq) = Br2(g) + H2O(l) Bromine solution = Bromine vapour + Water. Bromine water is an equilibrium mixture because, the amount of bromine gas dissolving into the water is equal to the amount of bromine gas leaving the solution.
Answered by Adil - Sat Jun 7 10:23:15 2008
How many grams of hydrogen bromide will be produced from the reaction with 7.5g bromine and excess water?...?
Q. How many grams of hydrogen bromide will be produced from the reaction with 7.5g bromine and excess water? (Bromine hydroxide is the other product.) Need help with this chemistry problem please. (: Anyone that can do this well will most likely be rated best by me ^-^ thanks!
Asked by - Sat Mar 13 16:48:05 2010 - Chemistry - 1 Answers - Comments
A. Br2 + H2O = HBr + Br OH moles Br2 = 7.5 /159.8 g/mol=0.047 = moles HBr mass HBr = 0.047 x 80.9 g/mol=3.8 g
Answered by Dr.A - Sun Mar 14 11:03:33 2010
Q. How many grams of hydrogen bromide will be produced from the reaction with 7.5g bromine and excess water? (Bromine hydroxide is the other product.) Need help with this chemistry problem please. (: Anyone that can do this well will most likely be rated best by me ^-^ thanks!
Asked by - Sat Mar 13 16:48:05 2010 - Chemistry - 1 Answers - Comments
A. Br2 + H2O = HBr + Br OH moles Br2 = 7.5 /159.8 g/mol=0.047 = moles HBr mass HBr = 0.047 x 80.9 g/mol=3.8 g
Answered by Dr.A - Sun Mar 14 11:03:33 2010
What is the advantage of bromine water over bromine in CCl4 in terms of reaction rate?
Q. Can the use of bromine water differentiate a substitution from an addition type of reaction? Why or Why not?
Asked by The Lark Ascending - Sun Jul 20 07:44:19 2008 - Chemistry - 1 Answers - Comments
A. The only uncatalyzed substitution reaction that Br2 will undergo is with phenolics and anilines. In this case I believe the reaction is slowed down, and less substitution occurs, when water is present. Alkenes react with Br2 in CCl4 to give viscinal dibromides (bromines on adjacent carbons). Alkenes react with Br2 in the presence of water to give bromohydrins (bromine and hydroxyl on adjacent carbons). I don't know which reaction is faster, or if the difference is significant. I would say that the advantage of the presence or absence of water in bromination with molecular bromine is gained by synthetic control as opposed to kinetics of reaction.
Answered by Glenguin - Mon Jul 21 15:37:33 2008
Q. Can the use of bromine water differentiate a substitution from an addition type of reaction? Why or Why not?
Asked by The Lark Ascending - Sun Jul 20 07:44:19 2008 - Chemistry - 1 Answers - Comments
A. The only uncatalyzed substitution reaction that Br2 will undergo is with phenolics and anilines. In this case I believe the reaction is slowed down, and less substitution occurs, when water is present. Alkenes react with Br2 in CCl4 to give viscinal dibromides (bromines on adjacent carbons). Alkenes react with Br2 in the presence of water to give bromohydrins (bromine and hydroxyl on adjacent carbons). I don't know which reaction is faster, or if the difference is significant. I would say that the advantage of the presence or absence of water in bromination with molecular bromine is gained by synthetic control as opposed to kinetics of reaction.
Answered by Glenguin - Mon Jul 21 15:37:33 2008
Chemical equation for reaction of linoleic acid with bromine water?
Q. A chemical equation is required for this simple bromine C=C bond de-colouration test, thank you.
Asked by - Thu Jul 21 19:51:10 2011 - Chemistry - 1 Answers - Comments
A. CH3(CH2)6CH=CHCH2CH=CH(CH2)6CO2H + 2 Br2 ---> CH3(CH2)6CHBr CHBr CH2CHBr CHBr(CH2)6CO2H or more simply, C19H34O2 + 2 Br2 ---> C19H34Br4O2
Answered by Doc - Thu Jul 21 19:59:13 2011
Q. A chemical equation is required for this simple bromine C=C bond de-colouration test, thank you.
Asked by - Thu Jul 21 19:51:10 2011 - Chemistry - 1 Answers - Comments
A. CH3(CH2)6CH=CHCH2CH=CH(CH2)6CO2H + 2 Br2 ---> CH3(CH2)6CHBr CHBr CH2CHBr CHBr(CH2)6CO2H or more simply, C19H34O2 + 2 Br2 ---> C19H34Br4O2
Answered by Doc - Thu Jul 21 19:59:13 2011
What happens when you put Bromine water with an Alkene and Alkane?
Q. If you mix a few drops of an alkane with a few drops of bromine water, what happens? What if instead of an alkane, you use an alkene? Why do you get these results? I didn't spell it wrong. I want to find the difference in reactions (and reasons why) between a saturated (or single bond - alkane) hydrocarbon and an unsaturated (multple bond - alkene or in other cases alkyne) hydrocarbon. thanks.
Asked by hannah g - Thu Mar 13 09:14:49 2008 - Chemistry - 6 Answers - Comments
A. Depends on the substances used and I think you might have gotten the wrong spelling. Is it alkaline?
Answered by Zendor - Thu Mar 13 09:18:06 2008
Q. If you mix a few drops of an alkane with a few drops of bromine water, what happens? What if instead of an alkane, you use an alkene? Why do you get these results? I didn't spell it wrong. I want to find the difference in reactions (and reasons why) between a saturated (or single bond - alkane) hydrocarbon and an unsaturated (multple bond - alkene or in other cases alkyne) hydrocarbon. thanks.
Asked by hannah g - Thu Mar 13 09:14:49 2008 - Chemistry - 6 Answers - Comments
A. Depends on the substances used and I think you might have gotten the wrong spelling. Is it alkaline?
Answered by Zendor - Thu Mar 13 09:18:06 2008
Disposing of hot tub water which contains bromine?
Q. Is there a measurable negative environmental impact from draining water from a hot tub into soil? The water is treated with bromine, but after several days without treatment, it registers 0ppm on a home testing kit. Is the bromine metabolized into something else? Other factors I should be considering? Thanks.
Asked by chemicalpill - Thu Jun 26 22:32:24 2008 - Chemistry - 2 Answers - Comments
A. There is no problem to dispose of this water. The bromine in the water acts as a sanitizer. If your reading is low, then it was simply "used up" in killing bacteria.
Answered by reb1240 - Thu Jun 26 22:45:49 2008
Q. Is there a measurable negative environmental impact from draining water from a hot tub into soil? The water is treated with bromine, but after several days without treatment, it registers 0ppm on a home testing kit. Is the bromine metabolized into something else? Other factors I should be considering? Thanks.
Asked by chemicalpill - Thu Jun 26 22:32:24 2008 - Chemistry - 2 Answers - Comments
A. There is no problem to dispose of this water. The bromine in the water acts as a sanitizer. If your reading is low, then it was simply "used up" in killing bacteria.
Answered by reb1240 - Thu Jun 26 22:45:49 2008
Urgent help needed! What causes the decolouration of the bromine water/alkene solution.?
Q. What causes the decolouration of the bromine water/alkene solution when bromine water is added to cyclohexene and hexen. Long description needed. not just basic knowledge. please help
Asked by - Thu Dec 10 01:57:09 2009 - Chemistry - 1 Answers - Comments
A. OK: Here's what I think is going on... You're dealing with a simple SN2 reaction. Consider the cyclohexene. There is one double bond. Draw cyclohexene, and next to the molecule [on the double bond side], draw Br2 as Br-Br. The electrons are moving from the double bond of cyclohexene to one of the Br atoms. The way I represent this is with: an arrow going FROM cyclohexene to the Br, and one going from the same Br back to the cyclohexene. I draw a second arrow from the 'attacked' Br to the other one. In short, what you're generating is a Bromonium ion, and you're expelling Br-. Here's a picture of a similar reaction: The bromonium ion is an intermediate step. Now that you've generated a bromonium ion, the molecule doesn't like it's newfound… [cont.]
Answered by - Thu Dec 10 02:50:23 2009
Q. What causes the decolouration of the bromine water/alkene solution when bromine water is added to cyclohexene and hexen. Long description needed. not just basic knowledge. please help
Asked by - Thu Dec 10 01:57:09 2009 - Chemistry - 1 Answers - Comments
A. OK: Here's what I think is going on... You're dealing with a simple SN2 reaction. Consider the cyclohexene. There is one double bond. Draw cyclohexene, and next to the molecule [on the double bond side], draw Br2 as Br-Br. The electrons are moving from the double bond of cyclohexene to one of the Br atoms. The way I represent this is with: an arrow going FROM cyclohexene to the Br, and one going from the same Br back to the cyclohexene. I draw a second arrow from the 'attacked' Br to the other one. In short, what you're generating is a Bromonium ion, and you're expelling Br-. Here's a picture of a similar reaction: The bromonium ion is an intermediate step. Now that you've generated a bromonium ion, the molecule doesn't like it's newfound… [cont.]
Answered by - Thu Dec 10 02:50:23 2009
When you combine akenes/Alkanes with Bromine water do you shake it in the tube?
Q. when Alkenes/Alkanes are combined with Bromine, gas, they should stay the same colour/change colour, do you have to initate the colour change by shaking the tube?
Asked by - Sat Sep 10 12:21:17 2011 - Chemistry - 1 Answers - Comments
A. Yes, otherwise it could be very very slow otherwise!
Answered by - Mon Sep 12 15:19:39 2011
Q. when Alkenes/Alkanes are combined with Bromine, gas, they should stay the same colour/change colour, do you have to initate the colour change by shaking the tube?
Asked by - Sat Sep 10 12:21:17 2011 - Chemistry - 1 Answers - Comments
A. Yes, otherwise it could be very very slow otherwise!
Answered by - Mon Sep 12 15:19:39 2011
if ethane is bubbled into bromine water, what colour will the bromine water turn?
Q. hi, i need to know if ethane is bubbled into bromine water, what colour will the bromine water turn? if you can help please post and i will be very grateful! thanks!
Asked by - Thu Mar 10 12:33:42 2011 - Earth Sciences & Geology - 1 Answers - Comments
A. Nothing will happen. Ethane does not react with bromine water, so it will remain red-brown. If you meant ethene, the bromine water will fade and become colourless.
Answered by kumorifox - Thu Mar 10 12:35:45 2011
Q. hi, i need to know if ethane is bubbled into bromine water, what colour will the bromine water turn? if you can help please post and i will be very grateful! thanks!
Asked by - Thu Mar 10 12:33:42 2011 - Earth Sciences & Geology - 1 Answers - Comments
A. Nothing will happen. Ethane does not react with bromine water, so it will remain red-brown. If you meant ethene, the bromine water will fade and become colourless.
Answered by kumorifox - Thu Mar 10 12:35:45 2011
How do you use an alkane and bromine water to identify an alkene?
Q. I'm stuck on a question for chemistry and can't find the answer in my notes. Help please? x
Asked by The Vegetable - Sat Mar 20 08:39:57 2010 - Chemistry - 2 Answers - Comments
A. alkenes are unsaturated when you add an alkene to bromine water (which has a yellow colour), the alkene reacts with the bromine - breaking its double carbon bond. you end up with single carbon bonds with bromine taking the place of where the hydrogen usually is. Since bromine is being used up the yellow colour of the solution fades Short answer add substance to bromine water. If solution goes colourless, the substance is an alkene (or alkyne)
Answered by Haris A - Sat Mar 20 08:57:37 2010
Q. I'm stuck on a question for chemistry and can't find the answer in my notes. Help please? x
Asked by The Vegetable - Sat Mar 20 08:39:57 2010 - Chemistry - 2 Answers - Comments
A. alkenes are unsaturated when you add an alkene to bromine water (which has a yellow colour), the alkene reacts with the bromine - breaking its double carbon bond. you end up with single carbon bonds with bromine taking the place of where the hydrogen usually is. Since bromine is being used up the yellow colour of the solution fades Short answer add substance to bromine water. If solution goes colourless, the substance is an alkene (or alkyne)
Answered by Haris A - Sat Mar 20 08:57:37 2010
what are the conditions when alkenes react with bromine water?
Q. i know the experiment and how to do it but i need conditions???anyone have a clue. thanx
Asked by paperback - Sat Apr 11 04:25:19 2009 - Chemistry - 1 Answers - 1 Comments
A. Alkenes will react at room temperature with aqueous bromine (Bromine Water) to form bromohydrins. i.e. --CH=CH-- + Br2(aq) --> --CHBr-CH(OH)--
Answered by CB - Sat Apr 11 04:37:19 2009
Q. i know the experiment and how to do it but i need conditions???anyone have a clue. thanx
Asked by paperback - Sat Apr 11 04:25:19 2009 - Chemistry - 1 Answers - 1 Comments
A. Alkenes will react at room temperature with aqueous bromine (Bromine Water) to form bromohydrins. i.e. --CH=CH-- + Br2(aq) --> --CHBr-CH(OH)--
Answered by CB - Sat Apr 11 04:37:19 2009
What intermolecular (not intramolecular) forces are there in a solution of bromine in water?
Q. Need to identify all the intermolecular forces involved in a solution of bromine water e.g. hydrogen bonding, london dispersion, dipole-dipole forces ect. Thank you.
Asked by - Wed Nov 30 06:09:45 2011 - Chemistry - 1 Answers - Comments
A. The water molecules undergo dipole-dipole forces with one another, due to the charge separation on the 'bent' molecules and the electronegativity difference between oxygen and hydrogen. The bromine might exist as Br2, or might be dissociated into Br- ions. Probably some of both species exist in the solution. The Br2 undergoes only london forces from the water molecules, although it might have some momentary induce dipole due to the dipole of the water molecules. The Br- ions will be hydrogen-bonded to the water molecules. The solutions are usually pretty dilute, so the bromine is unlikely to be in contact with other bromine to any great extent.
Answered by - Wed Nov 30 06:30:11 2011
Q. Need to identify all the intermolecular forces involved in a solution of bromine water e.g. hydrogen bonding, london dispersion, dipole-dipole forces ect. Thank you.
Asked by - Wed Nov 30 06:09:45 2011 - Chemistry - 1 Answers - Comments
A. The water molecules undergo dipole-dipole forces with one another, due to the charge separation on the 'bent' molecules and the electronegativity difference between oxygen and hydrogen. The bromine might exist as Br2, or might be dissociated into Br- ions. Probably some of both species exist in the solution. The Br2 undergoes only london forces from the water molecules, although it might have some momentary induce dipole due to the dipole of the water molecules. The Br- ions will be hydrogen-bonded to the water molecules. The solutions are usually pretty dilute, so the bromine is unlikely to be in contact with other bromine to any great extent.
Answered by - Wed Nov 30 06:30:11 2011
what type of chemical reaction occurs when butane decolourises bromine water ?
Q. Explain ?
Asked by - Mon Jan 9 16:02:53 2012 - Chemistry - 2 Answers - Comments
A. A nucleophillic addition takes place. The Br2 in the bromine water will react with the butane. E.g.: H2C=CH-CH2-CH3 + Br2 --> H2Br C-CHBr-CH2-CH3 Here is the mechanism:
Answered by - Mon Jan 9 16:13:37 2012
Q. Explain ?
Asked by - Mon Jan 9 16:02:53 2012 - Chemistry - 2 Answers - Comments
A. A nucleophillic addition takes place. The Br2 in the bromine water will react with the butane. E.g.: H2C=CH-CH2-CH3 + Br2 --> H2Br C-CHBr-CH2-CH3 Here is the mechanism:
Answered by - Mon Jan 9 16:13:37 2012
From Yahoo Answer Search: 'bromine water'
Thu Feb 2 04:26:10 2012