Question 209 of 512

Which of the following represent the correct decreasing order of acidic strength of following? 

(i) Methanoic acid

(ii) Ethanoic acid

(iii) Propanoic acid

(iv) Butanoic acid

(a) (i)>(ii)>(iii)>(iv)

(b) (ii)>(iii)>(iv)>(i)

(c) (i)>(iv)>(iii)>(ii)

(d)(iv)>(i)>(iii)>(ii)