Among the electrolytes Na_2SO_4,CaCl_2,Al_2(S | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(C) According to the Hardy-Schulze rule,the coagulating power of an electrolyte depends on the valency of the active ion (the ion carrying a charge op

Vedclass · Accepted Answer

$Al_2(SO_4)_3$

Vedclass · Answer

(C) According to the Hardy-Schulze rule,the coagulating power of an electrolyte depends on the valency of the active ion (the ion carrying a charge opposite to that of the colloidal particles).$Sb_2S_3$ sol is a negatively charged sol. Therefore,it is coagulated by the positively charged ions of the added electrolytes.The positively charged ions in the given electrolytes are:$Na^+$ (from $Na_2SO_4$),$Ca^{2+}$ (from $CaCl_2$),$Al^{3+}$ (from $Al_2(SO_4)_3$),$NH_4^+$ (from $NH_4Cl$).According to the Hardy-Schulze rule,the coagulating power increases with the increase in the magnitude of the charge on the ion. The order of coagulating power is $Al^{3+} > Ca^{2+} > Na^+ = NH_4^+$.Since $Al^{3+}$ has the highest charge $(+3)$,$Al_2(SO_4)_3$ is the most effective coagulating agent for $Sb_2S_3$ sol.Hence,option $C$ is correct.

Among the electrolytes $Na_2SO_4$,$CaCl_2$,$Al_2(SO_4)_3$,and $NH_4Cl$,the most effective coagulating agent for $Sb_2S_3$ sol is

Similar Questions

Match the following List-$I$ (Dispersed Phase - Dispersion medium) with List-$II$ (Type of colloid):
| List-$I$ | List-$II$ |
| :--- | :--- |
| $(A)$ Solid - Liquid | $(I)$ Gel |
| $(B)$ Liquid - Liquid | $(II)$ Aerosol |
| $(C)$ Solid - Gas | $(III)$ Sol |
| $(D)$ Liquid - Solid | $(IV)$ Emulsion |

Which of the following nanomaterials has exactly one dimension $< 100 \text{ nm}$?

Give information about examples of colloids.

Which colloidal sol is known as 'Aqua-dag'?

Which of the following ionic substances will be most effective in precipitating negatively charged sulphur sol? (All compounds are $100\%$ ionized)

Vedclass Test Series

Exam Paper Generator

Online Exam Module