UPSC Combined Geo-Scientist, Mains · 2022 · Mains Paper II

Q5. Ionic strength and the rate constant: primary salt effect

10 marks
Topic: Chemical kinetics and catalysis
Question only

Question

Derive an equation relating the effect of ionic strength on the rate constant of an ionic reaction. Discuss the effect of ionic product on rate constants.

Model answer

The free solution for 2022 answers questions 1, 2, 3, 4, 6, 7, 10, 12, 13 and 15, the ones picked in its time plan. Question 5 is answered in full in the Geo-Scientist Chemistry Paper II, 2021 to 2025 book, with every part of every paper.

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UPSC Combined Geo-Scientist (Main) Chemistry Paper II: Model Answers 2021 to 2025

All fifteen questions of each paper, with the question printed above its answer
Numericals worked from formula to result with units; graphs with labelled axes
Topic-wise weightage and a topic-wise index

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Topic notes: Arrhenius equation, collision theory and transition-state theory, with every Civil Services, IFoS and Geo-Scientist PYQ →

Coversprimary salt effectBrønsted–Bjerrum equationionic strengthDebye–Hückel limiting lawrate constantkinetic salt effect