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pK(a) values of two acids. A and B are 4...

`pK_(a)` values of two acids. A and B are 4 and 5. The strengths of these two acids are related as

A

Acid A is 10 times stronger than acids B

B

Strength of acid A : strength of acid B  4 : 5

C

The strengths of the two acids can not be compared

D

Acid B is 10 times stronger than acid A

Text Solution

Verified by Experts

The correct Answer is:
A
`pK_(a)` of acid A= 4 , `pK_(a) ` of acid B = 5
We know that `pK_(a) = - log K_(a)`
` :. ` Acid A `K_(a) = 10^(-4) , `Acid B `K_(a) = 10^(-5)`
Hence A is ten times stronger than that of B.
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