Statement I: The entropy of a solid increase when it is dissolved in the solvent. Statement II : It becomes less ordered.
Statement 1 and Statement 2 are correct and Statement 2 is the correct explanation of Statement 1
Both the Statement 1 and Statement 2 are correct and Statement 2 is NOT the correct explanation of Statement 1
Statement 1 is correct but Statement 2 is not correct
Statement 1 is not correct but Statement 2 is correct
Both the Statement 1 and Statement 2 are not correct.
A
Statement 1 and Statement 2 are correct and Statement 2 is the correct explanation of Statement 1
B
Both the Statement 1 and Statement 2 are correct and Statement 2 is NOT the correct explanation of Statement 1
C
Both the Statement 1 and Statement 2 are not correct.
D
Statement 1 is not correct but Statement 2 is correct
E
Statement 1 is correct but Statement 2 is not correct
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Solution
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Option A is the correct answer.
The entropy of the system is defined as the randomness of the system. More random movement occurs in a system, more is the entropy of the system.
When a solid is dissolved in a solvent, volume increases and hence the randomness of the molecules in the solvent increases. Thus the solution that is formed becomes more random and its entropy increases. We can also say that it becomes less ordered.
Thus statement 1 and 2 are both correct.
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