What is the pH of a $1*10^-4$ M $HCl$ solution?

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Answer 1 · 2016-07-25T15:42:06

$pH=4$

$pH=-log_10[H_3O^+]$

$pH=-log_10(10^(-4))=?$

I have assumed (reasonably) that hydrochloric acid gives quantitative hydronium ion in aqueous solution.

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