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The coagulating power of electrolytes having ions Na^+,Al³⁺ and Ba²⁺ for arsenic sulphide sol increases in the order

$Al^{3+}$ <

$Ba^{2+}$ <

$Na^{+}$

$Na^{+}$ <

$Ba^{2+}$ <

$Al^{3+}$

$Ba^{2+}$ <

$Na.^{2+}$ <

$Al^{3+}$

$Al^{3+}$ <

$Na^{+}$ <

$Ba^{2+}$

Answer:

Option B

Explanation:

According to HARDY SCHULZE RULE, the greater the charge on the oppositely charged ion, greater is its coagulating power. Since arsenic sulphide is a negatively charged sol, thus , the order of coagulating power is

$Na^{+}$ < $Ba^{2+}$ < $Al^{3+}$

Discussion Forum

Answer:

Explanation: