1.

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

Answer»

ACID A is 10 times STRONGER than acids B
Strength of acid A : strength of acid B = 4:5
The STRENGTHS of the two acids can not be compared
Acid B is 10 times stronger than acid A

Solution :`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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