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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 ΔG Θ 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 o

Options

  1. ABoth A and R are correct and R is the correct explanation of A
  2. BBoth A and R are correct but R is NOT the correct explanation of A
  3. CA is correct but R is not correct
  4. DA is not correct but R is correct

Correct answer

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

Step-by-step solution

The entropy is higher if the metal is in liquid state than when it is in solid state. The value of entropy change ( ∆ S ) of the reduction process is more on positive side when the metal formed is in liquid state and the metal oxide being reduced is in solid state. Thus the value of ∆ f G becomes more on negative side and the reduction becomes easier. ΔG = ΔH - TΔS ∵ Entropy of liquid is more than solid ∴ on melting the entropy increases and ΔG becomes more negative and h

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