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Please help me find the pH , please show work as well.
Thank you . Image for Please help me find the pH , please show work as well. Thank you . What is the pH of a 0.10 M solution of NaC
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Answer #1

Here is the relevant chemical equation for the above problem:

C6H5COO- + H2O <===> C6H5COOH + OH-

kb = [C6H5COOH][OH-] / [C6H5COO-]

5.6 x 10-10 = x . x / 0.10

x2 = 0.56 x 10-10

x = 0.74 x 10-5 where x = [OH-]

pOH = -log[OH-]

pOH = -log(0.74 x 10-5) = 5.13

pH = 14 - pOH

pH = 14 - 5.13 = 8.87




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