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3. pH is a negative logarithmic scale. Therefore a difference of 100 times more is translated to -log(100) = -2. Recall the formula pH = -log([H+]).

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Q: If solution a has a pH of 5 and solution b has 100 times the hydrogen ion concentration of solution A what is the pH of solution B?
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An acidic solution having a pH of 4 is how many times more acidic than a solution of pH9?

The pH scale represents a count of ions (hydrogen), or more accurately the "activity" of hydrogen ions. The pH is the negative of the logarithm (base 10) of the concentration in moles per liter. A solution with a pH of 4 is 100 times as concentrated as one with a pH of 6.


How much greater is the hydrogen ion concentration in tomatoes 4.2pH then in rainwater 6.2pH?

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What is the H3O plus concentration in a solution that is 100 times less acidic than one having a pH of 3.22?

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How many times greater is the hydrogen ion concentration in a solution with pH of 4 instead of 5?

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