Chemistry Ionic Equilibrium Hydrogen Ion Concentration- pH Scale and Buffer Solution Single Correct MCQ
Published on: August 14, 2026

The pH of 0.01 (M) KOH is 12 ; if the temperature of the given KOH solution is increased which of the following would occur ?

A
Both pH and pOH would remain constant
B
pH would be decreased but pOH remain constant
C
pH would be increased while pOH remain constant
D
pH would be increased while pOH would be decreased

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Text Solution

Verified by Experts
The correct answer is:
B

Since KOH is a strong electrolyte its dissociation remain unaffected, hence, [OH – ] = 10 –2

or pOH = 2 but on increasing temperature pK w < 14 or pH + pOH < 14

or pH < 12

Therefore pH would be decreased.

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