Question

9. Consider the following statements about true solutions,
1. They do not exhibit Tyndall effect.
IL They do not exhibit Brownian motion
III. Their particle size is less than 100 nm.
Which are incorrect statement?​

Answer 1

III .......,..............

Answer 2

The incorrect statements about true solutions are:

(i) They do not exhibit Brownian motion

(iii) Their particle size is less than 100 nm

• True solutions are the ones in which the particle size of the solute is less than 1 nm. While colloids have particles ranging in size from 1 to 100 nm.
• Brownian motion refers to the zig-zag motion of particles. It is worthy to note that the Brownian motion is inversely proportional to the size of the particles.
• Since true solutions have the smallest particles, they show brownian motion.