MEDIUMMCQ SINGLEIChO (Chemistry Olympiad)Physical ChemistryChemical kineticsPrevious Year Questions
For a reaction, activation energy Ea = 0 and the rate constant at 200 K is 1.6 × 106 s–1. The rate constant at 400 K will be: [Given that gas constant R=8.314 J K–1 mol–1] (Odisha NEET 2019)
A.3.2 × 104 s–1
B.1.6 × 106 s–1✓ Correct
C.1.6 × 103 s–1
D.3.2 × 106 s–1
Explanation
According to Arrhenius equation, CHEMICAL KINETICS 34 2 2 1 1 2 1 2 2 6 6 6 1 2 log 2.303 log 0; 1 1.6 10 1.6 10 1.6 10 a E k T T k R T T k k k s x x x