Australia's Science Forum

Posted: **03 Nov 2006, 12:26**

Hi everyone,

I'm in a bit confused, I'm setting up a prac that requires 70% sulfuric acid. It's for breaking cell walls of foods, fresh and processed. (upper school)
The trouble is the science staff are divided as to what molarity it should be.
I've made it around 7M which I think is strong enough, rather than 12.6M.
The experiment came out of the "web of life" 5a.2

Thanx
Julz

Posted: **03 Nov 2006, 22:28**

Hi Julia,

You will find that the Molarity will be 11.48M for the 70% Aqueous Sulfuric Acid Solution.

I hope this settles some doubt.

Robb.....

Posted: **06 Nov 2006, 10:32**

Hi Julia
I am using this website whenever I do not know exact molarity. it is easy to use it and it is free.For better websites you have to pay

http://www.trimen.pl/witek/calculators/stezenia.html

Posted: **07 Nov 2006, 15:22**

Thanks Jazz for that website and thanks Robb. Sorry I haven't replied earlier

Australia's Science Forum

70% Sulfuric Acid

70% Sulfuric Acid

Sulfuric Acid Concentration from % v/v to Molarity