JEE Main & Advanced Chemistry Equilibrium / साम्यावस्था Sample Paper Topic Test - Ionic Equilibrium

Equal volumes of two HCl solutions of \[pH=3\] and were mixed. What is the pH of the resulting solution?

A) 3.5

B) 4.0

C) 4.5

D) 3.3

Correct Answer: D

Solution :

[d] When equal volumes are taken, the concentration becomes half.

\[\therefore \] \[[{{H}^{+}}]=\frac{1}{2}({{10}^{-3}}+{{10}^{-5}})=505\times {{10}^{-6}}\]

\[\therefore \] \[pH=3.3\]