Question

Which of the following reactions gives oxide of nitrogen which is in solid state and acidic in nature? \[ \begin{aligned} \text{I. }&\mathrm{NH_4NO_3}\xrightarrow{\Delta} \\ \text{II. }& 2\mathrm{Pb(NO_3)_2}\xrightarrow{\Delta} \\ \text{III. }&\mathrm{P_4O_{10}+4HNO_3}\rightarrow \\ \text{IV. }& 2\mathrm{NO}+\mathrm{N_2O_4}\xrightarrow[250\,K]{} \end{aligned} \] The correct answer is

• A. III, IV only
• B. I, III, IV only
• C. I, II, III only
• D. II, IV only

Hint:

Among nitrogen oxides: \[ \boxed{\mathrm{N_2O_5}} \] and \[ \boxed{\mathrm{N_2O_3}} \] are solid acidic oxides (under suitable low-temperature conditions for \(\mathrm{N_2O_3}\)).

Answer 1

The Correct Option is A