What is the hydrogen ion concentration of a solution with a pH of 4.2? a) 3.2 x 10-6 M b) 2.7 x 10-9M c) 6.4 x 10-5 M d) 1.0 x 10-6 M.

asked Sep 2, 2022 216k views

5 votes

What is the hydrogen ion concentration of a solution with a pH of 4.2?

a) 3.2 x 10-6 M
b) 2.7 x 10-9M
c) 6.4 x 10-5 M
d) 1.0 x 10-6 M.

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3 votes

Explanation:

pH = 4.2

- log[H+] = 4.2

$[ H+] = {10}^( - 4.2)$

$[ H+] = 6.4 * {10}^( - 5)$

OPTION C

Omar Tarek answered Sep 9, 2022

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