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How many more hydrogen ions are in a solution with a pH of 2 than in solution with a pH of 5?
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How many more hydrogen ions are in a solution with a pH of 2 than in solution with a pH of 5?

User Barq
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pH measures the concentration of hydrogen ions on the log 10 scale. Thus, a pH 2 solution has 3 order of magnitude difference from that of a solution of pH of 5.

Therefore,
10^(3) = 1000. A solution of pH 5 has 1000 times more hydrogen ions than that in a solution with a pH of 5.
User Chadi
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