To coagulate gelatin sol, which one of the following is most... | Chemistry | SolveeIt

Question

To coagulate gelatin sol, which one of the following is most effective?

$NaCl$

$Na_{3}PO_{4}$

$AlCl_{3}$

Alcohols

Answer

$AlCl_{3}$

Explanation

Solution

Gelatin is a negatively charged In the coagulation of a negative sol, $Al^{3+}$ is most effective. Because higher the charge on the coagulating ion, more is the coagulation.

Chemistry Question on Surface Chemistry

Solution