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Which of the following expression is not...

Which of the following expression is not true ?

A

`[H^(+)]=[OH^(-)] = sqrt(K_(w))` for a neutral solution

B

`[H^(+)] gt sqrt(K_(w))` and `[OH^(-)] lt sqrt(K_(w))` for an acidic solution

C

`[H^(+)] lt sqrt(K_(w))` and `[OH^(-)] gt sqrt(K_(w))` for an alkaline solution

D

`[H^(+)]=[OH^(-)]=10^(-7) M` for a neutral solution at all temperatures

Text Solution

Verified by Experts

The correct Answer is:
B
`K_(w)=10^(-14)` only at T = 298 K
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