Question
Question: The pH of 0.01 (M) KOH is 12 ; if the temperature of the given KOH solution is increased which of th...
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
Answer
pH would be decreased but pOH remain constant
Explanation
Solution
Since KOH is a strong electrolyte its dissociation remain unaffected, hence, [OH–] = 10–2
or pOH = 2 but on increasing temperature pKw < 14 or pH + pOH < 14
or pH < 12
Therefore pH would be decreased.