Home
Class 11
CHEMISTRY
Which of the following acids is stronger...

Which of the following acids is stronger than benzoic acid `(K_(a) = 6.3 xx 10^(-5))`

A

`A(K_(a)=1.67 xx 10^(-8))`

B

`B(pK_(a)=6.0)`

C

`C(pK_(a)=4.0)`

D

`D(K_(a)=1.0 xx 10^(-5))`

Text Solution

Verified by Experts

The correct Answer is:
C
C has `pK_(a)=4.0`
`- log [K_(a)] = 4.0`
`[K_(a)] = - "antilog "(4.0) = 1 xx 10^(-4)`
C has higher value of `K_(a)` than that of benzoic acid.
` :. ` C is the stronger acid than benzoic acid.
Promotional Banner

Similar Questions

Explore conceptually related problems

Which of the following is the stronger acid?

Which of the following is stronger acid than methanol?

Which of the following is stronger hydrocarbon acid ?

Maleic acid is stronger than fumaric acid because :

Dibasic acids are stronger than monobasic acids.

The values of ionisation constants for some pairs of acids and bases are given which of them is stronger ? (a) Acetic acid (K_(a) =1.8 xx 10^(5)), boric acid (K_(a) =5,8 xx 10^(-10)) (b) Hydrofluoric acid (K_(a)= 6.7 xx 10^(-4)), benzoic acid (K_(a) =6.3 xx 10^(-5)) (c) Ammonium hydroxide (K_(b) =1.8 xx 10^(-5)) Magensium hydroxide (K_(b) =8.1 xx 10^(-3))

Formic acid is stronger acid than acetic acid. Explain.

Decarboxylation of which of the following acid gives benzoic acid –