Q:

Given that the concentration of hydronium ions in a solution with pH of 2 is 0.19 %, what would be the concentration of hydronium ions in a solution with pH of 3

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Given that the concentration of hydronium ions in a solution with pH of 2 is

0.19 %, what would be the concentration of hydronium ions in a solution with

pH of 3?


  1. 0.13 %
  2. 0.29 %
  3. 0.019 %
  4. 1.9 %

All Answers

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C: a pH change of one corresponds to a change in hydronium ion

concentration by a factor of 10. As the pH has risen, the acidity has decreased,

so there are fewer hydronium ions. That is 1/10 of 0.19 % = 0.019 %

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