Concentration of Solution

Q.

Define mass percent of a solution.

Q.

Which of the following solution does not show the Tyndall effect?

1. Milk

2. Starch solution

3. Ink

4. Sugar solution

Q.

How do you calculate the dilution factor? Give an example.

Q.

$20\mathrm{g}$ of sodium chloride is dissolved in water to make up the volume of the solution to $250\mathrm{mL}$. Calculate the mass by volume percentage of sodium chloride in the solution.

Q.

Let's suppose you have four solutions of salt water. Solution 1 has 55 g of salt dissolved in 445 mL of water. Solution 2 has a concentration of 21 %. Solution 3 has 36 g of salt dissolved in 108 mL of water. Solution 4 has a concentration of 23 %. Which of the following lists the solutions in order from the least concentrated to the most concentrated?

1. 1, 2, 3, 4

2. 2, 4, 3, 1

3. 3, 4, 2, 1

4. 1, 2, 4, 3

Q. Tyndall effect is not observed in .

1. emulsion
2. milk
3. salt solution

Q.

Difference between aqueous solution and non-aqueous solution.

Q.

A solution contains 50 g of common salt in 400 g of water. Calculate the concentration by mass percentage of the solution.

1. 14.27 %

2. 11.11%

3. 9.09 %

4. 12.50%

Q. A student wants to prepare a solution of acetic acid and water having 30% v/v. If 6 mL of acetic acid has been taken then how much water must be added to get the desired concentration?

1. 24 mL
2. 14 mL
3. 10 mL
4. 20 mL

Q. 1 kg of mud water sample contains 0.2 g of arsenic. The concentration of arsenide ions in terms of ppm is

1. 200

Q.

Which of the following shows tyndall effect - salt solution or starch solution?

Q. The amount of solute present in a given amount of solution represents:

1. dispersion
2. concentration
3. saturation
4. absorption

Q. What is the mass% of solute when 100 g of solution contains 30 g of solute?

1. 100
2. 70
3. 40
4. 30

Q. Which of the following represents the mass of glucose and mass of water required to make 250g solution which contains 25% glucose.

1. Mass of glucose = 62.5 g
2. Mass of water = 375 g
3. Mass of glucose = 75 g
4. Mass of water = 187.5 g

Q. A student wants to prepare a solution of acetone and water having $30\%$ v/v. If $6mL$ of acetone has been taken then how much water must be added to get the desired concentration?
[3 Marks]

Q. What is the mass% of solute when 100 g of solution contains 40 g of solute?

1. 100
2. 33
3. 66
4. 40