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Which statement/relationship is correct?...

Which statement/relationship is correct?

A

Use hydrolysis salt of strong base and weak acid gives a solution with phlt7

B

pH= `-log1/[H^+]`

C

only at `25^@C` the ph of water is 7

D

The value of `PK_w` at `25^@C` is 7

Text Solution

Verified by Experts

The correct Answer is:
C
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