Question

What is $pOH$ of an aqueous solution with hydrogen ion concentration equal to $3\times 10^{-5}mol{L}^{-1}$?

• A. $9.47$
• B. $4.52$
• C. $12.69$
• D. $11.69$

Answer 1

Answer: (A)

$pH=-log[H^{+}]$
$=-log(3\times 10^{-5})$
$=4.5229$
$pOH=14-pH$,
$14-4.5229=9.47$