Hardy-Schulze rule explains the effect of electrolytes on th... | Chemistry | SolveeIt | Solveeit

Today, August 18

Question

Hardy-Schulze rule explains the effect of electrolytes on the coagulation of colloidal solution. According to this rule, coagulation power of cations follow the order

A

$\ce{Ba^{+2} > Na^{+} > Al^{+3}}$

B

$\ce{Al^{+3} > Na^{+} > Ba^{+2}}$

C

$\ce{Al^{+3} > Ba^{+2} > Na^{+}}$

D

$\ce{Ba+2 > Al+3 > Na+}$

Answer

$\ce{Al^{+3} > Ba^{+2} > Na^{+}}$

Explanation

Solution

According to this law the coagulating effect of an ion on dispersed phase of opposite charge increases with the valency of the ion. The precipitating power of ${Al^{3+} , Ba^{++}, Na^{+}}$ ions is in order ${Al^{3+} > Ba^{2+} > Na^{+}}$ .