The dissociation constant of acetic acid is x × 10⁻⁵. When 25 mL of 0.2 M CH3COONa solution is mixed — JEE Mains Chemistry Past Papers Chemistry Question

Question

The dissociation constant of acetic acid is x × 10⁻⁵. When 25 mL of 0.2 M CH3COONa solution is mixed with 25 mL of 0.02 M CH3COOH solution, the pH of the resultant solution is found to be equal to 5. The value of x is _______.