Question 42

0.1 M HCl is diluted from 1 lit to 10 lit. The pOH of the resulting solution is _____


Correct Answer: 12

Solution

Diluting tenfold gives $$[\text{H}^+] = 0.01 = 10^{-2}\text{ M}$$, so pH $$= 2$$. Then pOH $$= 14 - 2 = 12$$.

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