JEE Main 2022 · 28 Jul · Shift 2 · Chemistry Q33

ChemistrySingle correct+4 / -1Question 33 of 90

Given below are two statements : One is labelled as Assertion A and the other is labelled as Reason R

Assertion A : The reduction of a metal oxide is easier if the metal formed is in liquid state than solid state.

Reason R : The value of $\Delta G^\ominus$ becomes more on negative side as entropy is higher in liquid state than solid state.

In the light of the above statements, choose the most appropriate answer from the options given below

Both A and R are correct and R is the correct explanation of A

Both A and R are correct but R is NOT the correct explanation of A

A is correct but R is not correct

A is not correct but R is correct

Answer and worked solution

Official answer: A

Both correct. A liquid metal has higher entropy, which makes $\Delta G^\ominus$ of reduction more negative, so reduction is easier.

(A)

Topics:Extraction and thermodynamics (Ellingham)

JEE Main 2022 · 28 Jul · Shift 2, Chemistry question 33