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 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
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 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
- (A)Both A and R are correct and R is the correct explanation of A✓ Correct
- (B)Both A and R are correct but R is NOT the correct explanation of A
- (C)A is correct but R is not correct
- (D)A is not correct but R is correct
Answer: (A)
Solution
Using the Gibbs free energy equation , when a metal is formed in the liquid state rather than solid state, the entropy () increases significantly. Since entropy of liquid is higher than solid, the term becomes larger, making more negative. A more negative means the reduction reaction is more spontaneous and easier. Both statements are correct and R correctly explains A.
JEE Main · 2022 · 28 Jul 2022 · Shift 2 · Single correct option