Multiple Choice
Which of the following species will be present in significant amounts in an aqueous solution of Na2CO3?
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14. Solutions
Types of Aqueous Solutions
Multiple Choice
Gelatin is an example of which type of colloid?
A
Sol
B
Emulsion
C
Gel
D
Foam
Verified step by step guidance1
Understand the definition of a colloid: a mixture where one substance is dispersed evenly throughout another, with particle sizes between 1 nm and 1 µm.
Identify the types of colloids based on the dispersed phase and dispersion medium: Sol (solid in liquid), Emulsion (liquid in liquid), Gel (liquid dispersed in a solid network), and Foam (gas dispersed in a liquid or solid).
Recall that gelatin forms a semi-solid network where liquid is trapped within a solid matrix, which is characteristic of a gel.
Compare gelatin's properties to the definitions: since gelatin is a solid network containing liquid, it fits the description of a gel colloid.
Conclude that gelatin is an example of a gel type colloid.
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