Question

Vinegar is a colloidal solution of acetic acid in water.

• A. True
• B. False

Answer 1

The correct option is B False

Vinegar or Acetic acid $\left({\mathrm{CH}}_3\mathrm{COOH}\right)$ in Water $\left({\mathrm{H}}_2\mathrm{O}\right)$ is an example of true solution instead of a colloid.

True solution: It is a homogeneous mixture of two or more components.

• The size of particles is less than 10^-9 m and cannot be seen with the naked eye.
• It does not show Tyndall effect i.e.; when particles can scatter a beam of light passing through them and make the path of light visible.

Colloids: A colloid is a heterogeneous mixture in which the size of the particles is so small that the particles cannot be seen with the naked eye.

• The diameter of the particles of colloids lies in the range of 10^-6 and 10^-9 m.
• Colloids show the Tyndall effect.
• Examples of colloids: Milk, mist etc.

Therefore, the given statement is false.