question_answer

Nitric acid forms an oxide of nitrogen on reaction with \[{{P}_{4}}{{O}_{10}}.\]How many resonating structures of the oxide of nitrogen will be formed?

A) 1                             

B) 3     

C)  4                                            

D)  5

Correct Answer: A

Solution :

\[{{P}_{4}}{{O}_{10}}\]being a dehydrating agent, removes a molecule of water and forms anhydride of \[HN{{O}_{3}}.\] \[4HN{{O}_{3}}+{{P}_{4}}{{O}_{10}}\xrightarrow[{}]{{}}4HP{{O}_{3}}+2{{N}_{2}}{{O}_{5}}\] Resonating structures of \[{{N}_{2}}{{O}_{5}}\] are