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#1
05-19-2010, 08:03 AM
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Calculating PH Levels HELP!!!!
I have to write a report about the experiment I did with my group on enzyme activity in different pH and temperatures. I need to calculate the pH levels of the following solutions:
5mL of H2O2 + 1mL of 0.1M HCl 5mL of H2O2 + 1mL of 1M HCl 5mL of H2O2 + 1mL of 0.1M NaOH 5mL of H2O2 + 1mL of 1M NaOH and I don't know what to do  I've read some information on the internet and it says the pH is the negative log of the molarity. so it has an example:pH of a 0.0025 M HCl solution = -log(0.0025) = 2.6 but since I have a combination of 2 chemicals, is it -log(M1+M1) or -log(M1) + -log(M2)? If you can help me it would be greatly appreciated 
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