Asked by Morgan
A buffer solution contains 0.052 M HC2H3O2 and 0.025 M NaC2H3O2. The pH of this solution is _____. Ka for HC2H3O2 is 1.8x10-5.
Answers
Answered by
Kevin
pH=Pka+log[A-]/[HA]
Pka=-log 1.8x10-5
+log (.025/.053)
Divide the concentrations out and take the log of it and add it to the negative log of 1.8x10-5
You can tell HC2H3O2 is the acid because Ka is the constant for the acid, while Kb would be constant for the base. I don't have a calculator handy or I'd check to see if the pH sounded right
Pka=-log 1.8x10-5
+log (.025/.053)
Divide the concentrations out and take the log of it and add it to the negative log of 1.8x10-5
You can tell HC2H3O2 is the acid because Ka is the constant for the acid, while Kb would be constant for the base. I don't have a calculator handy or I'd check to see if the pH sounded right
Answered by
Innocent
Thanks
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