Question

In HS⁻, I⁻, RNH₂ and NH₃, order of proton accepting
tendency will be
(a) I⁻ > NH₃ > RNH₂ > HS⁻ (b) HS⁻ > RNH₂ > NH₃ > I⁻
(c) RNH₂ > NH₃ > HS⁻ > I⁻ (d) NH₃ > RNH₂ > HS⁻ > I⁻

Answer 1

-order of proton accepting  tendency will be : RNH₂ > NH₃ > HS⁻ > I⁻

-The proton accepting tendency of a compound is directly dependent on the basic nature of it

- out of the given compounds, RNH₂ is the strongest base and NH₃ is less basic than it

-HS⁻ is less basic in nature than both above (RNH₂ and NH₃) and I⁻ is the least basic among the four

- So the correct order of proton acceptance will be as given in the option (c)