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Statement-1. For arsenic sulphide sol, ...

Statement-1. For arsenic sulphide sol, `BaCl_(2)` has higher coagulation value than NaCl.
Statement-2. Higher the valencey of the oppositely charged ion of the electrolyte added, higher is the coagulating power of the electrolyte.

A

Statement-1 is True, Statement-2 is True, Statement-2 is a correct explanation of Statement-1.

B

Statement-1 is True, Statement-2 is True, Statement-2 is NOT a correct explanation of Statement-1.

C

Statement-1 is True, Statement-2 is False.

D

Statement-1 is False, Statement-2 is Ture.

Text Solution

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The correct Answer is:
To solve the given question, we need to analyze both statements regarding the coagulation of arsenic sulfide sol and the properties of electrolytes. ### Step-by-Step Solution: 1. **Understanding the Coagulation Value:** - Coagulation value is defined as the minimum concentration of an electrolyte required to cause the coagulation of a colloidal solution. - It is inversely proportional to the coagulating power of the electrolyte. This means that a higher coagulation value indicates a lower coagulating power. 2. **Analyzing Statement 1:** - Statement 1 claims that for arsenic sulfide sol, BaCl₂ has a higher coagulation value than NaCl. - Arsenic sulfide (As₂S₃) is a negatively charged colloid. To coagulate it, we need a positively charged ion from the electrolyte. - BaCl₂ dissociates into Ba²⁺ and 2Cl⁻ ions, while NaCl dissociates into Na⁺ and Cl⁻ ions. - Since Ba²⁺ has a higher charge (2+) compared to Na⁺ (1+), Ba²⁺ will have a higher coagulating power than Na⁺. - Therefore, BaCl₂ will have a lower coagulation value than NaCl, contradicting Statement 1. 3. **Analyzing Statement 2:** - Statement 2 states that the higher the valency of the oppositely charged ion of the electrolyte added, the higher the coagulating power of the electrolyte. - This statement is true because a higher charge on the cation (or anion, depending on the charge of the colloid) will lead to a stronger attraction to the negatively charged colloid, thus enhancing the coagulating power. 4. **Conclusion:** - Since Statement 1 is false and Statement 2 is true, we conclude that the correct option is that Statement 1 is false and Statement 2 is true. ### Final Answer: - Statement 1 is false, and Statement 2 is true.
To solve the given question, we need to analyze both statements regarding the coagulation of arsenic sulfide sol and the properties of electrolytes. ### Step-by-Step Solution: 1. **Understanding the Coagulation Value:** - Coagulation value is defined as the minimum concentration of an electrolyte required to cause the coagulation of a colloidal solution. - It is inversely proportional to the coagulating power of the electrolyte. This means that a higher coagulation value indicates a lower coagulating power. ...
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