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Subject - Chemistry:

Basics

MCQ - 272-2458

Question:

The slope of the line for the graph of log k vs
l/T for the reaction,
N2O5 → 2NO2+ ½ O2
is -5000. Calculate the energy of
activation of the reaction.

  1. 95.7 kj mol-1
  2. 9.57 kj mol-1
  3. 957 kj mol-1
  4. 9.57 kj mol-1

Correct Answer: A

Explanation:

Slope=Ea/2.303R
Ea = - slope × 2.303 R
= - (-5000) × 2.303 × 8.314
= 95700 JK-1 mol-1
=95.7 kJ K-1 mol-1

Record Performance

645 MCQ for effective preparation of the test of Basics of Chemistry section.

Read the MCQ statement: The slope of the line for the graph of log k vs l/T for the reaction, N2O5 → 2NO2+ ½ O2 is -5000. Calculate the energy of activation of the reaction. , keenly and apply the method you have learn through the video lessons for Basics to give the answer. Record your answer and check its correct answer and video explanation for MCQ No. 272-2458.

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