Question

Calculate the H3O+ concentration for a solution with the following pH. Part A pH = 7.9...

Calculate the H3O+ concentration for a solution with the following pH.

Part A

pH = 7.9 Express your answer using one significant figure.

Part B

pH = 7.18 Express your answer using two significant figures.

Part C

pH = 11.8 Express your answer using one significant figure.

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Homework Answers

Answer #1

pH = -log[H+] = -log[H3O+]

[H3O+] = 10-pH

PART-A:     1 x 10-8                  (actual value obtained = 1.25892541e-8 )

PART-B:     6 x 10-8                  (actual value obtained = 6.60693448e-8 )

PART-C:     2 x 10-8                   (actual value obtained = 1.5848932e-12 )

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