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Topic: Benedict's Test - starting pH for solutions to be tested.  (Read 6932 times)

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Offline fbisnath

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Benedict's Test - starting pH for solutions to be tested.
« on: March 03, 2009, 06:01:43 PM »
Hi,
I'm doing a lab where I hydrolysed 10 mL 0.1M sucrose using 2mL 0.1M hydrochloric acid, neutralised it with ~1 mL sodium hydroxide and then tested the resulting solution using Benedict's and Bial's tests.
I'd like to know a possible value for the pH of the solution after hydrolysis and the effect, if any, of performing Benedict's and Bial's tests on solutions with low pHs and why.

Offline Arkcon

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Re: Benedict's Test - starting pH for solutions to be tested.
« Reply #1 on: March 03, 2009, 06:24:31 PM »
For starters, you will need to know the concentration of your sodium hydroxide solution, to begin to determine final pH.  For the effect of pH on your tests, you might want to start with the reactions that they undergo, and try to see if excess H+ or OH- are likely a problem.

These are some hints, that I've given you, to help you learn for yourself.  Which is what we do, 'round here.  Complete how much, what, and why,are answers you're supposed to come up with yourself.
Hey, I'm not judging.  I just like to shoot straight.  I'm a man of science.

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