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A weak acid HA has a pH =4 . This can be...

A weak acid HA has a pH `=4` . This can be confirmed as

A

`c=10^(-3), alpha =10%`

B

`c=10^(-2), K_(a)=10^(-6)`

C

`[A]=10^(-4)`

D

`K_(a)=10^(-2),alpha=10%`

Text Solution

Verified by Experts

The correct Answer is:
A, B, C
`:'[H^(+)]=alphac =sqrt(K_(a)xxc)`
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