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 one of the objective questions from the 2025 Waec Model Questions Vol1 Chemistry examination.

Difficulty level: Medium .

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