JEE Main 2022 · ChemistryNumerical answerNumerical valueMediumCalculation

JEE Main 30 June 2022, Shift 1, Chemistry Q84

Question 84 of 90 in this shift, Chemistry question 24 of 30, Section B.

For the reaction P

\rightarrow

B, the values of frequency factor A and activation energy

\mathrm{E_A}

are

4\times10^{13}

^{-1}

and 8.3 kJ mol

^{-1}

respectively. If the reaction is of first order, the temperature at which the rate constant is

2\times10^{-6}

^{-1}

is ___________

\times10^{-1}

K (Given : ln 10=2.3, R=8.3 J K

^{-1}

mol

^{-1}

, log2=0.30)

Official answer

225

NTA final key.

Chapter: Chemical Kinetics
Topic: Arrhenius Equation
Idea tested: Arrhenius Exponential Form

Same idea in other shifts

Asked 4× in all

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Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.