Question

Urea (CH₄N₂O) is a common fertilizer that can be synthesized by the reaction of ammonia (NH₃) with carbon dioxide as follows:

2NH₃(aq)+CO₂(aq)→CH₄N₂O(aq)+H₂O(l)
In an industrial synthesis of urea, a chemist combines 145.1 kg of ammonia with 211.4 kg of carbon dioxide and obtains 174.9 kg of urea. Determine the theoretical yield of urea Express your answer using four significant figures.

Answer 1

The answer to your question is: 68.3%

Step-by-step explanation:

Urea = ?

Theoretical yield

Ammonia 145.1 kg

Carbon dioxide = 211.4 kg

Urea = 174.9 kg

MW NH3 = 17kg

MW CO2 44 kg

MW Urea = 60 kg

2NH₃(aq) + CO₂(aq) → CH₄N₂O(aq) + H₂O(l)

34 44 kg 60kg

145.1 211.4 174.9

Limiting reactant = NH3

34kg of NH3 ------------------ 60 kg of Urea

145.1 kg ------------------- x

x = (145.1 x 60) / 34

x = 256 kg of Urea

Percent yield = 174.9 / 256 x 100

= 68.3%