Identify the correct option regarding surface | vedclass

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(C) The correct option is $(C)$.$(A)$ $As_2S_3$ sol is a negative sol and is prepared by double decomposition,not peptization.$(B)$ Sulphur sol is a n

Vedclass · Accepted Answer

$C_{15}H_{31}COOCH_2-C(CH_2OH)_3$ is a non-ionic detergent.

Vedclass · Answer

(C) The correct option is $(C)$.$(A)$ $As_2S_3$ sol is a negative sol and is prepared by double decomposition,not peptization.$(B)$ Sulphur sol is a negative sol. According to the Hardy-Schulze rule,the coagulating power of an electrolyte depends on the valency of the cation. For a negative sol,the cation with the highest valency is most effective. Here,$Al^{3+}$ (from $AlCl_3$) is most effective,not $Ba^{2+}$.$(C)$ Non-ionic detergents do not contain any ions. The structure $C_{15}H_{31}COOCH_2-C(CH_2OH)_3$ is an ester of a fatty acid with a polyol,which lacks ionic groups,making it a non-ionic detergent.$(D)$ Soap solutions behave as electrolytes at low concentrations,but above the Critical Micelle Concentration $(CMC)$,they form micelles,which reduces the number of free ions,causing the electrical conductance to decrease or remain constant.

Identify the correct option regarding surface phenomenon.

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