Chemistry MCQ Practice

A compound Y is the only substance formed when two volumes of dry ammonia gas react with one volume of dry carbon dioxide (both volumes measured at r.t.p.).

 

What is the most likely formula of Y?

 

A)  (NH₄)₂CO₃

 

B)  NH₂COONH₄

 

C)  (NH₂)₂CO

 

D)  NH₄COONH₄

 

 

Answer: B

 

- In a reaction involving gases, volume ratio = molar ratio (Avogadro's relation)

 

- Since 2NH₃ + CO₂ → Y, the molecular formula of Y must contain 2N, 6H, 1C and 2O.