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Statement 1 : Entropy of solution is les...

Statement 1 : Entropy of solution is less than entropy of pure solvent.
Statement 2 : The freezing point of water is depressed by the addition of glucose.

A

Statement 1 is true, statement 2 is true, statement 2 is a correct explanation for statement 1

B

Statement 1 is true, statement 2 is true , statement 2 is not a correct explanation for statement 1

C

Statement 1 is true, statement 2 is false

D

Statement 1 is false, statement 2 is true

Text Solution

AI Generated Solution

The correct Answer is:
To analyze the given statements, we will evaluate each one based on the principles of thermodynamics and colligative properties. ### Step-by-Step Solution: **Step 1: Evaluate Statement 1** - **Statement 1**: "Entropy of solution is less than entropy of pure solvent." - **Analysis**: Entropy is a measure of disorder or randomness in a system. When a solute is added to a solvent to form a solution, the overall disorder of the system increases. This is because the solute particles disrupt the orderly arrangement of the solvent molecules, leading to an increase in entropy. Therefore, the entropy of the solution is greater than that of the pure solvent. - **Conclusion**: Statement 1 is **False**. **Step 2: Evaluate Statement 2** - **Statement 2**: "The freezing point of water is depressed by the addition of glucose." - **Analysis**: This statement refers to a colligative property of solutions. When a non-volatile solute, such as glucose, is added to a solvent like water, it lowers the freezing point of the solvent. This phenomenon is known as freezing point depression. The presence of solute particles interferes with the formation of the solid structure of ice, thus lowering the temperature at which freezing occurs. - **Conclusion**: Statement 2 is **True**. **Final Conclusion**: - Statement 1 is False. - Statement 2 is True. - Therefore, the correct answer is option D: Statement 1 is false and Statement 2 is true.
To analyze the given statements, we will evaluate each one based on the principles of thermodynamics and colligative properties. ### Step-by-Step Solution: **Step 1: Evaluate Statement 1** - **Statement 1**: "Entropy of solution is less than entropy of pure solvent." - **Analysis**: Entropy is a measure of disorder or randomness in a system. When a solute is added to a solvent to form a solution, the overall disorder of the system increases. This is because the solute particles disrupt the orderly arrangement of the solvent molecules, leading to an increase in entropy. Therefore, the entropy of the solution is greater than that of the pure solvent. - **Conclusion**: Statement 1 is **False**. ...
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Entropy of the solutions is higher than that of pure liquid . Why?

The freezing point of solution is ……..than the boiling point of pure solvent.

Knowledge Check

  • Freezing point of a solution is smaller than freezing point of a solvent. It is due to :

    A
    `/_\H` of solution and solvent is almost identical since intermolecular force between solvent molecules are involved
    B
    `/_\S` solution (between solution and solid ) is lager than that of the `/_\S`of solvent (between solvent and solid)
    C
    `/_\S` of then solution is smaller than that of the solvent
    D
    `/_\H` of the solution is much higher than of solvent but `/_\S` of solvent than that of the solvent

  • Statement-1 : Enthalpy (H) and entropy (S) both are extensive properties. And Statement-2 : Both are independent of mass.

    A
    Statement-1 is True, Statement-2 is True, Statement-2 is a correct explanation for Statement-1
    B
    Statement-1 is True, Statement-2 is True, Statement-2 is Not a correct explanation for Statement-1
    C
    Statement-1 is True, Statement-2 is False
    D
    Statement-1 is False, Statement-2 is True

  • Statement-1 : Entropy of egg increases after boiling. And Statement-2 : As boiling causes the denaturation of proteins.

    A
    Statement-1 is True, Statement-2 is True, Statement-2 is a correct explanation for Statement-1
    B
    Statement-1 is True, Statement-2 is True, Statement-2 is Not a correct explanation for Statement-1
    C
    Statement-1 is True, Statement-2 is False
    D
    Statement-1 is False, Statement-2 is True

    • Similar Questions

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    The boiling point of solution is ……..than the boiling point of pure solvent.

    The boiling point of a solution is more than that of the pure solvent. Justify.

    The boiling point of a solution is more than that of the pure solvent. Justify.

    Statement - I. Greater the molal depression constant of the solvent used less in the freezing point of the solution. Statement - II. Depression in freezing point depends upon the nature of the solvent.

    In the depression of freezing point experimet, it is found that: I. The vapour pressure of the solution is less than that of pure solvent. II. The vapour pressure of the solution is more than that of pure solvent. III. Only solute molecules solidify at the freezing point. IV. Only solvent molecules solidify at the freezing point.

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