Question

Calculate the pH of a solution in which hydrogen ion concentration is $0.005g$-equi/$L$?

• A. 2.3
• B. 2.8
• C. 2.9
• D. 2.6

Answer 1

Answer: (A)

$pH=-\log \left[H^{+}\right]=-\log [0.005]$
$=-\log \left[5\times 10^{-3}\right]=2.3$