Answer
$pH=2.432$
Work Step by Step
$(H^{+})=3.7\times 10^{-3}$M
Putting in the equation:
$pH=-\log(H^{+}) $
$pH=-\log(3.7\times10^{-3})$
$pH=-(\log3.7+\log10^{-3})$
$pH=-(\log3.7-3\log10)$
$pH=-\log3.7+3$
$pH=2.432$
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