JEE Main 2016ChemistryGeneral Principles and Processes of Isolation of MetalsMediumMCQ

JEE Main 2016 — General Principles and Processes of Isolation of Metals Question with Solution

JEE Main 2016 (09 Apr Online)

Question

The plot shows the variation of -ln⁡KP Versus temperature for the two reactions.

Ms+12O2g→MO(s) and

Cs+12O2g→CO(s)



Identify the correct statement:

Choose an option

Show full solutionCorrect option: C
Correct answer
CAt T<1200 K, the reaction MOs+Cs→Ms+CO(g) is spontaneous

Step-by-step explanation

ΔG=Δ G 0 +RTlnQ

At Equilibrium ΔG=0  & Q=K

∆Go=-RTln⁡Kp

∴-ln⁡Kp=∆GoRT

∆Go∝ Temperature. At high temperature ∆Go value is very high so non-feasible or non-spontaneous process takes place.

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About this question

This is a previous-year question from JEE Main 2016, covering the General Principles and Processes of Isolation of Metals chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.