Waec Model Questions Vol1 2024 Chemistry Question 48

Practice objective / multiple choice question 48 from the 2024 Waec Model Questions Vol1 Chemistry examination.

Waec Model Questions Vol1 2024 Chemistry Objective / Multiple Choice Hard Difficulty

Question 48 WAEC_MODEL_QUESTIONS_VOL1 • 2024 • CHEMISTRY • objective

The following bond dissociation energies (kJ·mol⁻¹) are given: N≡N 945, O=O 498, Cl-Cl 243, N-O in NOCl 607, N-Cl in NOCl 200. Using these values, calculate the enthalpy change (ΔH) for the reaction: 2 NOCl(g) → N₂(g) + 2 Cl₂(g) + O₂(g).

Answer Options

A. -415 kJ

Correct Answer B. -315 kJ

C. 315 kJ

D. -215 kJ

Correct Answer

Correct Option:

-315 kJ

About This Question

This is Waec Model Questions Vol1 2024 Chemistry Question 48. It is one of the objective questions from the 2024 Waec Model Questions Vol1 Chemistry examination.

Difficulty level: Hard .

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Waec Model Questions Vol1 2024 Chemistry Question 48

The following bond dissociation energies (kJ·mol⁻¹) are given: N≡N 945, O=O 498, Cl-Cl 243, N-O in NOCl 607, N-Cl in NOCl 200. Using these values, calculate the enthalpy change (ΔH) for the reaction: 2 NOCl(g) → N₂(g) + 2 Cl₂(g) + O₂(g).

Answer Options

About This Question

Master the Exam!

The following bond dissociation energies (kJ·mol⁻¹) are given: N≡N 945, O=O 498, Cl-Cl 243, N-O in NOCl 607, N-Cl in NOCl 200. Using these values, calculate the enthalpy change (ΔH) for the reaction: 2 NOCl(g) → N₂(g) + 2 Cl₂(g) + O₂(g).