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.
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