What is the concentration of H+ ions in moles per dm3 of a sodium of pH 4.398?

A.

4.0 χ 10-5

B.

0.4 χ 10-5

C.

4.0 χ 10-3

D.

0.4 χ 10-3

View answer & explanation

Correct answer is A

PH = -log (H+)
(H+) = 10-4.348 = 4.0 χ 10-5

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