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Question: Aqueous solution of \(HCl\) has the \(pH = 4\). Its molarity would be....

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

A

4 M

B

0.4 M

C

0.0001 M

D

10 M

Answer

0.0001 M

Explanation

Solution

pH=4pH = 4 means; [H+]=10−4mol\lbrack H^{+}\rbrack = 10^{- 4}mol