Question

27. () What is solvent? Write any four properties of solution.
[12]
(ii) A solution contains 60 g of common salt in 540 g of water. Find the concentration in terms of mass by
mass percentage of the solution.
[2]
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Answer 1

Answer:

(i) It can be expressed in several ways. Colligative properties of a solution depend on only the total number of dissolved particles in solution, not on their chemical identity. Colligative properties include vapor pressure, boiling point, freezing point, and osmotic pressure.

(ii) Mas of common salt (solute)=40 g

Mass of water (soluted) =320 g

mass of solution=320+40

=360 g

concentration of solution=

massofsolution

M

mass

ofsolute

×100

360

40

×100=11.11%

Hence, the concentration of the solution is 11.11%

Explanation:

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Answer 2

Solvent - the substance which is more in amount.

Properties of a solution are

1. It is of single phase.

2. It is a homogeneous mixture.

3. It consists of two or more than two components.

2) Mass of commpm salt = 60 g

Mass ofwater = 540 g

Total mass = 600 g

Mass percentage = mass of solute / mass of solution x 100

= 60/600 x100

= 10%