Types of Solutions Based on Concentration of the Solution

Q. Question 3 (a)
Pragya tested the solubility of three different substances at different temperatures and collected the data as given below (results are given in the following table, as grams of substance dissolved in 100 grams of water to form a saturated solution).

a. What mass of potassium nitrate would be needed to produce a saturated solution of potassium nitrate in 50 grams of water at 313 K?

Q.

What is an unsaturated solution?

Q.

Classify solutions based on the physical state of the solute and the solvent.

Q.

Give one example of each of the gaseous and solid solutions.

Q.

What will happen if a saturated solution is : (i) heated, and (ii) cooled ?

Q.

What will happen if a saturated solution is heated or cooled?

Q.

How can you convert a saturated solution into an unsaturated one?

Q.

difference between saturated solution unsaturated solution and super saturated solution?

Q.

Which of the following contains less solute at a given temperature and pressure?

Unsaturated solution or Saturated solution.

Q.

If you are given some copper sulphate crystals, how would you proceed to prepare its saturated solution at room temperature? Give practical details. How can you show that your solution is really saturated?

Q. What is the difference between solubility and saturation?

Q.

Which one of the following statements is incorrect regarding lyophilic sols ?

1. Coagulation is reversible

2. Viscosity and surface tension are same as dispersion medium

3. High concentration of dispersed phase can be obtained easily

4. Viscosity and surface tension are same as dispersion medium

Q.

What happens when the temperature of a saturated sugar solution is increased?

Q.

You are required to prepare 100 gm of crystals of pure potassium nitrate from its saturated solution at 75°C. The room temperature is 20°C and the solubility of potassium nitrate at 75°C and 20°C is 155 gm and 31 gm per 100 g of water respectively. Find the initial weight of potassium nitrate required to achieve it, assuming water available is 100 gm.

Q.

(a) Differentiate between a saturated and an unsaturated solution. How will you test whether a given solution is saturated or not?

(b) How would you prepare a saturated solution of sodium chloride in water at ${25}^{\circ }C$? What will happen if this solution is cooled to ${10}^{\circ }C?$

Q.

The solubility of potassium nitrate (KNO₃) at 313K is 62 g. What mass of potassium nitrate would be needed to produce a saturated solution of KNO₃ in 50 g of water at 313 K?

Q.

10 g of potassium chloride dissolves in 31.5 g of water at $70°\mathrm{C}$ to form a saturated solution. Calculate the solubility of potassium chloride at this temperature?

Q.

Rama tested the solubility of four substances at different temperatures and found in grams of each substance dissolved in 100 g of water to form a saturated solution

Now answer the following questions :

(a) Which substance is the least soluble at 293 K?

(b) Which substance shows the maximum change in its solubility when the temperature is raised from 293 K to 313 K?

(c) Find the amount of ammonium chloride that will separate out when 55 g of its solution at 333 K is cooled to 293 K?

(d) What is the effect of temperature on the solubility of a salt?

(e) What mass of sodium chloride would be needed to make a saturated solution in 10 g of water at 293 K?

Q.

Deepti took a glass of water and started to add sugar to it. After some time she observes, she cannot dissolve more sugar into it. What is this solution called?

1. Unsaturated

2. Heterogenous

3. Super Saturated

4. Saturated

Q.

Which of the following are the properties of a solution?

1. It is composed of only one phase

2. Solutions exist in liquid state only

3. The particles of a solution are smaller than 1nm in diameter

4. Solution is a homogeneous mixture

Q.

The amount of a solute present in its saturated solution at a given temperature is called the solubility of the solute at that temperature.

The solubility of an unknown substance in water at 50°C is 30g.

The solubility of the given substance in water at 100°C would be

1. 0

2. Less than 30 g

3. 30 g

4. More than 30 g

Q. When no more solute can be dissolved in a solution at a given temperature, then such a solution is called a/an ___ solution.

Q.

A saturated solution can be converted to an unsaturated solution by __________ the saturated solution or by ___________ to the saturated solution.

Q.

Which test will you carry out to find out if a given solution is saturated or unsaturated or supersaturated?

Q. Is sugar syrup a true solution.......give appropriate reason for your answer......?

Q.

How will you prepare a saturated solution of sodium chloride in water at 25°C? What will happen if this solution is cooled to 10°C?

Q. What is Plasma in chemistry?

Q.

Define Unsaturated solution

Q.

Explain the differences between homogenous and heterogenous mixture.

Q.

A solution in which no more solute can be dissolved in a solvent is called a saturated solution.

1. True
2. False