Question

Arrange the following in order of increasing acid strength

(i) HBr, HCl , HF , HI

(ii) CH4 , H2O , HF ,NH3

Answer 1

Hf HCl HBr HI HF is weak acid

Ch4 NH3 H2O HF HF is weak and CH4 is strong

Answer 2

1. HF<HCL<HBR<HI

2.NH3<CH4<H2O<HF