A liquid has a pH of 4.2. Find the hydrogen ion concentration [H+].?

Express your answer in scientific notation.

I know it's something like pH= -log [H+], but I cannot figure it out for the life of me.

2007-11-22 10:53:08 · 1 answers · asked by ms_lotr_freak 3 in Science & Mathematics ➔ Chemistry

That is the correct formula.

4.2 = -log [H+]

-4.2 = log [H+]

10^-4.2 = [H+]

[H+] = 6.3 x 10^-5M

2007-11-22 10:56:52 · answer #1 · answered by lhvinny 7 · 0⤊ 0⤋

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