Question

Colloidal sulfur is used in oral medicines for blood purification.
A) True.
B) False.

Answer 1

Hint: We know that a phase separated mixture is called colloid in which one substance of microscopically soluble or insoluble particle is suspended throughout another substance. There are two types of colloids and they are (1) Lyophilic colloids, and (2) Lyophobic colloids.

Complete step by step answer:
Colloidal sulphur consists of sulphur in such small particles that these can remain suspended in water as a colloidal solution. The colloidal sulphur is prepared in two ways. (i) By running hydrogen sulfide into a solution of sulfur dioxide. (ii)By precipitating lime-sulfur solution with acid.
We must remember that when hydrogen sulphide is passed through the nitric acid which produces colloidal sulphur as a product. We can write the chemical equation for the reaction as,
${H_2}S + 2HN{O_3} \to 2N{O_2} + S + 2{H_2}O$
We must remember that colloidal sulfur may be a natural remedy to treat skin conditions and adores acne, psoriasis, eczema, and dermatitis. Colloidal sulfur are often taken orally for blood purification or mixed with alternative ingredients and used as soap or shampoo. Because of its healthful properties mixture sulphur is employed in oral medicines for blood purification.

Therefore, the given statement is true.

Additional Information:
As we know, there are two sorts of colloids and that they are (1) Lyophilic colloids, and (2) Lyophobic colloids.
Now, we see about lyophilic colloid as,
The colloidal solutions during which the dispersed phase has strong affinity towards water are called as lyophilic sol and that they are often easily formed by direct heating or mixing. These sols are reversible in nature and stable, and can't be coagulated easily. The force of attraction between dispersed particles and dispersed medium is high thanks to the formation of hydrogen bonds. Example: Gelatin, starch.
Let us discuss lyophobic colloids.
The colloidal solutions during which the dispersed phase has low affinity towards dispersed medium are called as lyophobic sol and that they can't be formed by direct heating or mixing. They’re prepared by special methods. These sols are permanent in nature and unsteady, easily coagulated. Example: metal dissolved in water.
The Lyophilic sols coagulate easily by the addition of a huge amount of electrolyte whereas lyophobic sols are easily coagulated by the addition of a bit of electrolyte.

Note: We have to remember that the minimum mass of colloid which is added to stop the coagulation of red gold is named as gold number. The gold number and therefore the protecting power are inversely proportional which suggests smaller the gold number higher the protective power Lyophobic colloid is shielded from coagulation by using Lyophilic protective colloid. The protective power of the colloid can be predicted from the gold number value.
Example: The ice particles are protected from coagulation by adding gelatin.