A solution has pH 3. By how much is its hydrogen ion concentration greater than that of a solution with pH 5?
Answer and explanation
Correct answer: B. 100 times
- Step 1: The difference in pH is 2. Step 2. Each pH unit is a factor of 10, so the factor is 10^2 = 100. Answer: 100 times. Why not the others: 2 times: pH is logarithmic, not linear. 10 times: A difference of 2 pH units is 10^2. 1000 times: That is the factor for 3 pH units.
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