engineering chemistry MCQ #4901

The rate constant of a reaction is 0.05 s^-1 at 25°C and 0.15 s^-1 at 35°C. The activation energy is

engineering chemistry MCQ #4901

  1. Question 1

    Q1. The rate constant of a reaction is 0.05 s^-1 at 25°C and 0.15 s^-1 at 35°C. The activation energy is

    • A) 50 kJ/mol
    • B) 60.3 kJ/mol
    • C) 70 kJ/mol
    • D) 80 kJ/mol

    Answer: 60.3 kJ/mol

    Explanation: Using Arrhenius equation, ln(k2/k1) = (Ea/R)(1/T1 - 1/T2), we get Ea = 60.3 kJ/mol, with R = 8.314 J/(mol K).