Preparation of Colloidal Solutions

IMPORTANT

Preparation of Colloidal Solutions: Overview

This topic explains some electrical and chemical methods used for preparation of colloidal solution with pictorial illustrations. Here, we will also discuss the process of converting a precipitate into a colloidal solution.

Important Questions on Preparation of Colloidal Solutions

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25 mL of silver nitrate solution (1M) is added dropwise to 25 mL of potassium iodide (1.05 M) solution. The ion(s) present in very small quantity in the solution is/are

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Which method is used to prepare colloids?

As2O3+3H2SAs2S3sol+3H2O

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Select the incorrect statement for colloidal solution.

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Colloidal solution of gold can be prepared by

MEDIUM
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Write briefly about the preparation of colloids by any two chemical methods.

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Which of the following metalic sols cannot be prepared by Bredig's arc method?

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Freshly prepared precipitate sometimes gets converted to colloidal solution by

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A colloidal Sol of ice is obtained by _____.

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The Arsenic sulphide Sol can be prepared by passing _____ to Arsenic oxide cold solution in water.

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Discuss how does the gold Sol prepared.

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How does Silicic acid Sol prepared?

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List out the various condensation methods involved in the preparation of colloids.

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Sols of mercury can be prepared by passing the vapour through cold water containing a suitable stabiliser such as _____.(ammonium salt/potassium hydroxide)

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The ammonium salt is used in the preparation of colloids by changing the phase as _____.

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What is the role of the stabilizer in the preparation of colloids?

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How does the mercury Sol prepared?

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Discuss the preparation of colloids by changing the physical state of the substance.

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When an alcoholic solution of sulphur is made to pass through excess water it yields a colloidal solution of _____.

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In solvent exchange method, the substances can soluble in _____.

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How does the solvent exchange process carried out?