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# Can someone please help and explain this chemistry problem?

Determine how many times more acidic or basic a solution is (how many times greater the concentration of hydronium ion [H3O+]) at

a. pH 2 relative to pH 4

### 1 Answer

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- Bobby_ThinLv 74 weeks ago
pH is a logarithmic scale

so if we compare pH4/ pH2 we get 2

with logs 2 is a power so the answer is 10^2 or 100

pH 2 is 100 * more acidic than a solution with ph 4

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