Question

Aqueous solution of $HCl$ has the pH = 4. Its molarity would be

• A. 4 M
• B. 0.4 M
• C. 0.0001 M
• D. 10 M

Answer 1

The correct option is C

0.0001 M

pH =4 means; $\left[H^{+}\right]$= ${10}^{-4}mol$;