MDCAT Chemistry MCQ #710

The bond energy of a C-I bond is approximately 240 kJ/mol. How much energy is required to break the C-I bonds in 0.5 moles of methyl iodide?

MDCAT Chemistry MCQ #710

  1. Question 1

    Q1. The bond energy of a C-I bond is approximately 240 kJ/mol. How much energy is required to break the C-I bonds in 0.5 moles of methyl iodide?

    • A) 480 kJ
    • B) 120 kJ
    • C) 240 kJ
    • D) 60 kJ

    Answer: 120 kJ

    Explanation: Breaking 1 mole of C-I bonds requires 240 kJ; 0.5 moles requires 120 kJ. Option C is the energy for a full mole.