question_answer

Which of the following reactions are correctly given?

(i) \[2NaN{{O}_{2}}+2FeS{{O}_{4}}+3{{H}_{2}}S{{O}_{4}}\]\[\xrightarrow{{}}\,\,\,\,\,F{{e}_{2}}{{(S{{O}_{4}})}_{3}}+2NaHS{{O}_{4}}+2{{H}_{2}}O\]

(ii) \[2NO+N{{O}_{2}}\xrightarrow{250K}{{N}_{2}}{{O}_{4}}+1/2{{N}_{2}}\]

(iii) 4\[4HN{{O}_{3}}+{{P}_{4}}{{O}_{10}}\xrightarrow{{}}4HP{{O}_{3}}+2{{N}_{2}}{{O}_{5}}\]

(iv) \[Pb{{(N{{O}_{3}})}_{2}}\xrightarrow{673K}Pb\,\,{{(N{{O}_{2}})}_{2}}+{{O}_{2}}\]

A)  (i) and (ii)                     

B)  (i) and (ii)

C)  (iii) and (iv)                  

D)  (ii) and (iii) only