A pH of 4 is 100 times more acidic than a pH of 6?

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A pH of 4 is 100 times more acidic than a pH of 6?

isn't that right?
(just need confirmation)

2007-09-19 12:16:06 · 2 answers · asked by C'est Comme Un Rêve 3 in Science & Mathematics ➔ Chemistry

2 answers

That is correct.

pH = -log [H+]

So, 4 = - log [H+] --> [H+] = 1x10^-4.

6 = -log [H+] --> 1x10^-6.

1x10^-4 / 1x10^-6 = 100

pH 4 has 100 times as many hydronium ions than pH 6 in aqueous solution.

2007-09-19 12:20:01 · answer #1 · answered by lhvinny 7 · 0⤊ 0⤋

yes, ph is a logarithmic scale, so a pH difference of 2 = 100 fold difference in H+ concentration

2007-09-19 19:19:00 · answer #2 · answered by LabMonkey 3 · 0⤊ 0⤋