[Waizac]

Hey guys,

I've been given an assignment about the molarity of citric acid in lemonade. I'm stuck on one question:

"Could you use the same process to analyse the acid in a cola drink. If so what adjustments to the practical work would you have to make."

As far as I know the phosphoric acid in cola is similar to citric acid, both weak trio-protic acids, so it can't be that.
As the information didn't specify whether the lemonade was still or carbonated I was wondering whether adjustments would be made for that. However there was a previous question which asked why some people boiled lemonade prior to the experiment. Could there be anything else that I've missed?

Thanks guys!

[Dan]

As far as I know the phosphoric acid in cola is similar to citric acid, both weak trio-protic acids, so it can't be that.

Check the pKa values, they are not that similar...

[Waizac]

Thanks for the advice!

Sorry, I should have mentioned that the lemonade was titrated against a strong base, in the case NaOH.
...And reading back I realise that I didn't even mention that this was a titration, sorry again!

So would anything have to be changed in the method of which the titration was performed between each acid?

Thanks again!