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Which of the following solutions when added to 1L of a 0.1 M `CH_3COOH` or in the pH of the solution `K_a=1.8xx10^(-5)` for `CH_3COOH`?

A

`3 mM HCOOH (K_a=6xx10^(-4))`

B

`0.1 M CH_3COONa`

C

`1.34 mM HCl`

D

`0.1 M CH_3COOH`

Text Solution

Verified by Experts

The correct Answer is:
A,C,D
`[H^+]=sqrt(1.8xx10^(-5)xx0.1)=1.34xx10^(-3) M`
to which the solution in (A,C & D) are ISOHYDRIC.
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