FBISE 9th Class Chemistry Chapter 6 Solutions Short Questions Answers
FBISE 9th class Chemistry Chapter 6 Solutions Short Questions with answers are combined for all 9th class(Matric/ssc) Level students. Here You can prepare all Chemistry Chapter 6 Solutions short question in unique way and also attempt quiz related to this chapter. Just Click on Short Question and below Answer automatically shown. After each question you can give like/dislike to tell other students how its useful for each.
Class/Subject: 9th Class Chemistry
Chapter Name: Solutions
Board: Federal Board
Helpful For:
- Federal Boards 9th Class Chemistry Annual Examination
- Schools 9th Class Chemistry December Test
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FBISE 9th Class Chemistry Chapter 6 Solutions Short Questions Answers
Define solution?
A homogeneous mixture of two or more substances is called a solution.
Define Solute?
In a solution, the substance that is present in a lesser amount is called the solute.
Define Solvent?
The component of a solution which is present in a larger quantity is solution is called the solvent.
Define Standard solution?
The solution which cannot dissolve more solute at a particular temperature is called a saturated solution.
Define unsaturated solution?
A solution that can dissolve more of the solute at a given temperature is called an unsaturated solution.
Define supersaturated solution?
A solution that contains more of the solute than is contained in the saturated solution is called a supersaturated solution.
Write the names of the concentration units of a solution?
i. Percentage %
ii. Molarity M
Define Molarity and give its unit.
Molarity is the concentration unit in which the amount of solute is expressed in moles and the quantity of solution in dm3. Its unit is mol dm3.
Define Solubility?
Solubility of a substance in a particular solvent at a definite temperature is the maximum amount of the solute in grams that can dissolve in 100 grams of the solvent to form a saturated solution.
What are the true solutions?
A true solution is a homogeneous mixture in which the particles are individual molecules or ions distributed evenly throughout the surrounding fluid.
What are the colloids?
A heterogeneous mixture of tiny particles of a substance dispersed through a medium is called a colloid.
What do you mean by suspension?
Such a heterogeneous mixture containing particles large enough to be seen with the naked eye and distinct from the surrounding fluid is called a suspension.
Define dilute solution?
Dilute solutions are those which contain a relatively small amount of dissolved solute in the solution.
Define concentrated solution?
Concentrated solutions are those which contain a relatively large amount of dissolved solute in the solution are called concentrated solutions.
Why solutions are important for us?
We encounter many substances in our daily life such as air, soft drinks, juices, shampoo, petrol, natural gas, diesel, kerosene, cough syrup, and many others these substances are the solution.
What are the physical states of solutions?
Solutions are found in three physical states depending upon the physical state of solvent e.g. brass is a solid solution of Zn and Cu, seawater is a liquid solution and air is a gaseous solution. Liquid solutions are the most common because of the most common solvent water.
How will you test whether the given solution is a colloidal solution or not?
If there is a scattering of light inside the solution, is a colloidal solution. If the solution does not show the Tyndall effect. Then it is not the colloidal solution.
What do you mean, like dissolves like?
Like dissolves like means polar substances are soluble in polar solvents and non-polar substances are soluble in nonpolar solvents.
What do you mean by volume/volume%?
It is the volume in Cm3 of a solute per 100cm3 of the solution.
% by volume = Volume of solute/Volume of solution x 100
What is an aqueous solution?
The solution which is formed by dissolving a substance in water is called an aqueous solution.
Why solubility of Li2SO4 and Ce2(SO4) decreases with the increase of temperature?
Li2SO4 and Ce2(SO4) dissolve in water with the evolution of heat, therefore the solubility of such salts decreases with the increases of temperature.
Gasoline does not dissolve in water, Why?
Gasoline and oils do not dissolve in water look into the nature of gasoline and oil molecules. Gasoline and oil molecules are non-polar the attraction between a water molecule and oil or gasoline molecules are very weak liquids are insoluble in water.
Are gemstone solutions?
Yes, many naturally occurring gemstones are solid solutions. For example, Ruby. Opal in these solutions a solid solute dissolves in a solid solvent.
Why we stir paints thoroughly before using them?
Because paint is suspension, In suspension particles remain undissolved and settle down.
How you can explain the solute-solvent interaction to prepare NaCl solution?
When NaCl is added to water it dissolves readily because the attractive interaction between ions of NaCl and polar molecules of water is strong enough to overcome attractive forces between Na+ and Cl- in solid NaCl. In this way, NaCl dissolves in water.
How much water should be mixed with 18cm3 of alcohol to obtain 18% (v/v) alcohol solution?
18cm3 of alcohol is dissolved in a sufficient amount of water so that the total volume of the solution becomes 100 cm3.
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