Prelab Brief
To distinguish between a true solution, a colloidal solution, and a suspension based on transparency, filtration, and the Tyndall effect.
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Theory
Compare true solutions, colloids, and suspensions using the Tyndall effect. To distinguish between a true solution, a colloidal solution, and a suspension based on transparency, filtration, and the Tyndall effect.
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Formula
Principle: To distinguish between a true solution, a colloidal solution, and a suspension based on transparency, filtration, and the Tyndall effect.
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Aim
To distinguish between a true solution, a colloidal solution, and a suspension based on transparency, filtration, and the Tyndall effect.
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Apparatus
- Three beakers
- Laser pointer or torch
- Filter paper and funnel
- Salt (for true solution)
- Starch / Milk (for colloid)
- Chalk powder / Mud (for suspension)
- Distilled water
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Procedure
- Prepare three mixtures: salt+water, starch+water, chalk+water.
- Observe transparency of each mixture.
- Shine a laser beam through each — observe scattering (Tyndall effect).
- Filter each mixture — check if solute passes through.
- Let them stand undisturbed — check for settling.
Pre-Lab Questions
What is the main aim of the Solutions, Colloids & Suspensions Experiment?
Which principle is demonstrated in the Solutions, Colloids & Suspensions Experiment?
What apparatus is required for this experiment?
Why is Three beakers used in this experiment?
What formula or relationship is verified in this experiment?
What precaution should be followed while performing this experiment?
What conclusion can be drawn from the Solutions, Colloids & Suspensions Experiment?