2011年5月16日 — Question: The Ka for benzoic acid is 6.5 x 10-5. Calculate the pH of a 0.10 M benzoic acid solution. The Ka for benzoic acid is 6.5 x 10-5.
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Move the decimal so there is one non-zero digit to the left of the decimal point. The number of decimal places you move will be the exponent on the 10 10 .
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