Q3) distinguish between i) homogenous and heterogeneous mixture ii) Stability True solution, suspension and colloid on the basis of a) b) Size of particles c) Scattering of light
Answers
Answer:
Explanation:
Meaning
True solutions are the type of mixtures, where the solute and solvents are properly mixed in the liquid phase.
Colloidal solutions are the type of mixture, where the solute (tiny particles or colloids) is uniformly distributed in the solvent (liquid phase).
The suspension is the mixture, where the solute does not get dissolved, rather get suspended in the liquid and float freely in the medium.
Example
Sugar solution in water.
Starch dissolved in water.
Soil dissolved in water.
Nature of the solutions
Homogenous.
Heterogenous.
Heterogenous.
External appearance
Transparent.
Translucent.
Opaque.
Size of the particles (in diameter)
<1 nm.
1-1000 nm.
>1000 nm.
Diffusion of the solution through parchment paper
Diffusion of the particles of the true solutions is simple and smooth through parchment and filter paper as well.
Particles of the colloidal solutions do not diffuse or pass through parchment paper, but it is easy through filter paper. Particles of the suspension do not pass through parchment or filter paper.
Sedimentation
Will, not sediment.
Particles or colloids will not sediment.
Particles will get sediment.
Visibility of particles In true solutions, particles are invisible through the naked eye.
The particles in the colloidal solution are visible through the electron microscope, but not through the naked eye.
The particles in the suspension are visible through naked eyes as well as under the electron microscope.
Tyndall effect
The true solution does show the Tyndall effect.
Tyndall effect is shown by the colloids in the colloidal solution.
The particles show Tyndall effect.
Brownian Movements
Particles in the true solution do show Brownian movements. Particles in the colloidal solution show Brownian movements. The particles show Brownian movements.
Explanation:
A homogeneous mixture has the same proportions of its components throughout in any given sample and isalso referred to as a solution. Conversely, a heterogeneous mixture has components in which proportions vary throughout the sample.