Question

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

• A. 0
• B. 3
• C. 5
• D. 10

Answer 1

Answer: (B)

3

Answer 2

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