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Calculate pH of 1.0 xx 10^(-8) M solutio...

Calculate pH of `1.0 xx 10^(-8)` M solution of HCl.

A

`8`

B

`-8`

C

Between `7` and `8`

D

Between `6` and `7`

Text Solution

Verified by Experts

The correct Answer is:
D
`10^(-8) M HCI`
At such a low concentration the contribution of `[H^(o+)]` from water cannot be neglected, which is `10^(-7)`. In such cases, the `pH` of the acid can be calculated to be slightly less than `7`.
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