How the sol of collodiion is obtained?

Answer

To understand how a sol of colloid is obtained, we can break down the process into several steps. Here’s a step-by-step solution:

### Step 1: Understanding Colloids
A colloid is a mixture where tiny particles are dispersed throughout a continuous medium. In this case, we are focusing on a colloidal solution, which is a type of colloid where the dispersed phase is liquid.

**Hint:** Remember that colloids consist of two phases: the dispersed phase and the dispersion medium.

### Step 2: Selecting the Colloidal Substance
For the preparation of a colloidal sol, we need to select a suitable substance. In this case, we will use pyroxylene, which is a derivative of nitrocellulose.

**Hint:** Nitrocellulose is often used in various applications, including as a propellant and in film production.

### Step 3: Dissolving the Substance
To obtain the colloidal sol, pyroxylene is dissolved in a mixture of ether and alcohol. This solvent mixture helps to dissolve the pyroxylene effectively, creating a syrupy solution.

**Hint:** The choice of solvent is crucial; it should be able to dissolve the substance without reacting with it.

### Step 4: Formation of the Colloidal Sol
As the pyroxylene dissolves in the ether-alcohol mixture, it forms a stable colloidal sol. The tiny particles of pyroxylene are dispersed throughout the solvent, creating a homogeneous solution.

**Hint:** The stability of the colloidal sol can be influenced by factors such as temperature and concentration.

### Step 5: Application of the Colloidal Sol
The resulting colloidal sol can be used in various applications, including surgical dressings. The properties of the sol make it suitable for such uses.

**Hint:** Consider how the properties of colloids, like their ability to remain dispersed, make them useful in practical applications.

### Summary
In summary, a colloidal sol is obtained by dissolving pyroxylene in a mixture of ether and alcohol, resulting in a stable syrupy solution suitable for various applications.