Question

The pH of a $0.001M$ solution of $HCl$ is

• A. 0
• B. 3
• C. 5
• D. 10

Answer 1

Answer: (B)

$\left[H^{+}\right]=0.001$
$pH=-\log \left[H^{+}\right]$
$=-\log \left[10^{-3}\right]$
$=3$