Question:
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⊖ 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.
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⊖ 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.
Updated On: Sep 24, 2024
- 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
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The Correct Option is A
Solution and Explanation
Both A and R are correct and R is the correct explanation of A
ΔG = ΔH - TΔS
∵ Entropy of liquid is more than solid
∴ on melting the entropy increases and ΔG becomes more negative and hence it becomes easier to reduce metal
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Concepts Used:
General Principles and Processes of Isolation of Elements
What are Ores and Minerals?
Minerals are the naturally occurring, homogeneous inorganic solid substances. They are having a definite chemical composition and crystalline structure, hardness and color. For example, copper pyrite, calamine, etc.
Impurities in an ore are called gauge. The removal of a gauge from the ore is called concentration ore.
Several steps are involved in the extraction of pure metal from ores. Major steps are as follows –
- Concentration of the ore
- Isolation of the metal from its concentrated ore
- Purification of the metal