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Evgeny Zislis · Answer 1 · 2018-02-16T03:39:59+0000

The definition and formula to calculate pH is:

pH = log { 1 / [H+] }

So, the pH of this solution, whose molar concentration of H+ is [H+] = 1.0 * 10^-4, is:

pH = log { 1 / (1.0 * 10 ^-4) } = log (10^4) = 4

Answer: option C. 4.00

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