Neco Model Questions Vol1 2017 Chemistry Question 24

Practice objective / multiple choice question 24 from the 2017 Neco Model Questions Vol1 Chemistry examination.

Neco Model Questions Vol1 2017 Chemistry Objective / Multiple Choice Hard Difficulty
Question 24 NECO_MODEL_QUESTIONS_VOL1 • 2017 • CHEMISTRY • objective

Given that the standard enthalpy change for the reaction \(\mathrm{N_2(g) + O_2(g) \rightarrow 2\,NO(g)}\) is +180.5 kJ, the standard enthalpy of formation of \(\mathrm{NH_3(g)}\) is -46.1 kJ·mol⁻¹, and that of liquid water \(\mathrm{H_2O(l)}\) is -285.8 kJ·mol⁻¹, calculate the standard enthalpy change for the combustion of ammonia: \(\mathrm{4\,NH_3(g) + 5\,O_2(g) \rightarrow 4\,NO(g) + 6\,H_2O(l)}\).

Answer Options

Correct Answer A. -1.17×10^3 kJ
B. -1.07×10^3 kJ
C. -1.27×10^3 kJ
D. -1.17×10^2 kJ
Correct Answer
A
Correct Option:
-1.17×10^3 kJ

About This Question

This is Neco Model Questions Vol1 2017 Chemistry Question 24. It is one of the objective questions from the 2017 Neco Model Questions Vol1 Chemistry examination.

Difficulty level: Hard .

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