Waec Model Questions Vol1 2025 Chemistry Question 6

Practice objective / multiple choice question 6 from the 2025 Waec Model Questions Vol1 Chemistry examination.

Waec Model Questions Vol1 2025 Chemistry Objective / Multiple Choice Medium Difficulty
Question 6 WAEC_MODEL_QUESTIONS_VOL1 • 2025 • CHEMISTRY • objective

The diatomic molecule CO has a force constant of 1900 N·m⁻¹ and a bond length of 113 pm. Given atomic masses C = 12.01 u and O = 16.00 u (1 u = 1.6605×10⁻²⁷ kg), calculate the vibrational wavenumber (in cm⁻¹) of CO and state whether the bond is more characteristic of a double or a triple bond.

Answer Options

A. ≈2.50×10³ cm⁻¹, indicating a double‑bond character
B. ≈1.85×10³ cm⁻¹, indicating a double‑bond character
Correct Answer C. ≈2.17×10³ cm⁻¹, indicating a triple‑bond character
D. ≈1.95×10³ cm⁻¹, indicating a triple‑bond character
Correct Answer
C
Correct Option:
≈2.17×10³ cm⁻¹, indicating a triple‑bond character

About This Question

This is Waec Model Questions Vol1 2025 Chemistry Question 6. It is a objective / multiple choice question from the 2025 Waec Model Questions Vol1 Chemistry examination.

Difficulty level: Medium .

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