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CGP EDU Academic Team
Published on: August 12, 2026
For pure water :
A
pK w increases with decrease in temperature.
B
Absolute dissociation constant decreases with decrease in temperature.
C
increases with decrease in temperature.
D
Both pH and pOH decrease with rise in temperature.
Text Solution
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(a,b,d) On heating pure water the value of ionic product of water increases i.e., K w = 10 –14 at 25 o C and at 100 o C K w = 10 –12 . Thus pH and pOH both becomes 6 at 100 o C (pH and pOH = 7 at 25 o C).
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