O-LevelChemistryStoichiometry5070/11 · Oct/Nov 2012 · Q81 Mark

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 s.t.p.). What is the most likely formula of Y?

A(NH4)2CO3

BNH2COONH4

C(NH2)2CO

DNH4COONH4

✓ Correct answer

B: NH2COONH4

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Topic: Stoichiometry, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, Oct/Nov 2012 Paper 1 Variant 1, question 8.

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