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Which of the following are correct ?...

Which of the following are correct ?

A

pH of 0.1 M HF is more than that of 0.1 M HCl

B

pH of pure water is greater than that of 0.1 M HCl

C

pH of water at `25^(@) ` C is greather than that at `30^(@) C`

D

pH of water is 7 at any temperature

Text Solution

Verified by Experts

The correct Answer is:
A, B, C
HF is weaker than `HCl rArr `pH more pure water
` -PH =7, ` acid ` - pH lt 7`
` kw uparrow as T uparrow rArr pKwdownarrow `
`pH " of water " rArr "only at " 25 ^(@) C `
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