InterviewSolution
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InterviewSolution
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The coagulating power of electrolytes having inos `Na^(o+),Al^(3+)` and `Ba^(2+)` for arsenic sulphide sol increases in the orderA. `Al^(3+)ltBa^(2+)ltNa^(+)`B. `Al^(3+)ltNa^(+)ltBa^(2+)`C. `Ba^(2+)ltNa^(+)ltAl^(+)`D. `Na^(+)ltBa^(2+)ltAl^(3+)` |
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Answer» Correct Answer - D Arsenic sulphide `(As_(2)S_(3))` is an anionic sol (negatively charged sol). Thus, its coagulation will depend upon coagulating power of cation. According to Hardy-Schulze rule, higher the valency of the coagulating ion added, the greater is its power to cause precipitation. `Na^(+)ltBa^(2+)ltAl^(3+)` |
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