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An aqueous solution of HCI is 10^(-9) M ...

An aqueous solution of `HCI is 10^(-9) M HCI`. The `pH` of the solution should be

A

`9`

B

Between `6` and `7`

C

`7`

D

Unpredictable

Text Solution

Verified by Experts

The correct Answer is:
B
`H_(3)O^(o+) = 10^(-9)M`.
Since the concentration of `H_(3)O^(o+) is lt 10^(-6)M`. So concentration fo `H_(3)O^(o+)` is calculated from ionisation of water and its common effect, so the value will lie between `6` and `7`.
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