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pH of 0.05 aqueous solution of weak acid...

pH of 0.05 aqueous solution of weak acid HA`(K_a=4×10^(-4))` is

A

`4.7`

B

`2.35`

C

`3.39`

D

`1.3`

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The correct Answer is:
C
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AAKASH INSTITUTE-TEST 5-EXAMPLE
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  3. pH of 0.05 aqueous solution of weak acid HA(Ka=4×10^(-4)) is

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  4. Which of the following set has DeltafH°=0?

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