Can you help me with this titration question please? Thanks :) Watch

xhxhxh
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Hi, I have done a titration question from an F325 paper, January 03 (2816/01) but I got stuck on the second part of the question: 'Use the results to calculate the molar mass of acid A and suggest its identity'. This was because I did not know the molar ratio of the equation between A and NaOH so I had difficulty calculating the moles of A. I was wondering if there is a method to find the molar ratio in regards to this question. Maybe I don't have to calculate the molar ratio?? I could be over complicating this question for myself but I thought that I would need some way of telling whether the acid was dibasic, monobasic or even tribasic.

Any help would be greatly appreciated! Thanks.

I have attached the question in a comment below.
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TSR Jessica
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Sorry you've not had any responses about this. Are you sure you've posted in the right place? Here's a link to our subject forum which should help get you more responses if you post there.


Just quoting in Fox Corner so she can move the thread if needed :wizard:
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username986184
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(Original post by xhxhxh)
Hi, I have done a titration question from an F325 paper, January 03 (2816/01) but I got stuck on the second part of the question: 'Use the results to calculate the molar mass of acid A and suggest its identity'. This was because I did not know the molar ratio of the equation between A and NaOH so I had difficulty calculating the moles of A. I was wondering if there is a method to find the molar ratio in regards to this question. Maybe I don't have to calculate the molar ratio?? I could be over complicating this question for myself but I thought that I would need some way of telling whether the acid was dibasic, monobasic or even tribasic.

Any help would be greatly appreciated! Thanks.

I have attached the question in a comment below.
Question says 'Compound A is a straight chain organic acid.' Assume monobasic as otherwise it would say, diacid, triacid etc.
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xhxhxh
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(Original post by TeachChemistry)
Question says 'Compound A is a straight chain organic acid.' Assume monobasic as otherwise it would say, diacid, triacid etc.
But there would be a possibility that the acid was HOOCRCOOH (with R being the rest of the acid) - that would be straight chain
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username986184
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(Original post by xhxhxh)
But there would be a possibility that the acid was HOOCRCOOH (with R being the rest of the acid) - that would be straight chain
But that would be a diacid.
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xhxhxh
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(Original post by TeachChemistry)
But that would be a diacid.
I know, that's what I mean, but the problem is that the question doesn't specify. Unless it does in a way that I haven't picked up.
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Roseman
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(Original post by xhxhxh)
Hi, I have done a titration question from an F325 paper, January 03 (2816/01) but I got stuck on the second part of the question: 'Use the results to calculate the molar mass of acid A and suggest its identity'. This was because I did not know the molar ratio of the equation between A and NaOH so I had difficulty calculating the moles of A. I was wondering if there is a method to find the molar ratio in regards to this question. Maybe I don't have to calculate the molar ratio?? I could be over complicating this question for myself but I thought that I would need some way of telling whether the acid was dibasic, monobasic or even tribasic.

Any help would be greatly appreciated! Thanks.

I have attached the question in a comment below.
Is this related to Medcin?
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xhxhxh
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(Original post by Roseman)
Is this related to Medcin?
What is medcin? It's from an old F325 chemistry past paper
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