Write a one point of difference between concentration and solubility
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1. Concentration is amount of solute dissolved in a unit quantity (mass or volume) of a solution. While solubility is the maximum amount of the solute that can be dissolved in a given amount of the solvent.
2. Concentration is expressed as percent by weight or volume, mole fraction, molarity etc. Solubility is the ability of a solute to dissolve in a solvent at given temperature and pressure. It is expressed as grams/ litre or moles/litre.
1. Concentration is amount of solute dissolved in a unit quantity (mass or volume) of a solution. While solubility is the maximum amount of the solute that can be dissolved in a given amount of the solvent.
2. Concentration is expressed as percent by weight or volume, mole fraction, molarity etc. Solubility is the ability of a solute to dissolve in a solvent at given temperature and pressure. It is expressed as grams/ litre or moles/litre.
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Solubility of a substance (solute) in a given solvent is the maximum amount of the solute that can be dissolved in a specified quantity of the solvent (usually 1 litre) at a given temperature (solubility usually increases with temperature).
OR
It can be said that solubility of a substance in a given solvent is the amount of that substance which is present in a specified quantity (usually 1 litre) of saturatedsolution at a given temperature.
The two definitions are almost the same because a saturated solution is a solution which contains the maximum amount of solute that can be dissolved in it.
Solubility can have only one value for a given substance at a specified temperature.
For example, the solubility of sodium chloride in water is 36 grams per 100 grams of the solution at 20 degree Celcius. This means that if you take 100 grams of the salt solution and evaporate off all the water, you will get 36 grams of sodium chloride. Another meaning is that if you take 100 grams of water at 20 degrees, you cannot dissolve more than 36 grams of salt in it. This is the maximum possible.
On the other hand, concentration is simply the amount of solute that is present in a given quantity of the solution. This can have any value below solubility.
For example, you can think of various salt solutions having different amounts of salt in it.
(1) A solution having 1.5 grams of NaCl in 100 grams of solution OR
(2) A solution having 5 grams of NaCl in 100 grams of solution OR
(3) A solution having 25 grams of NaCl in 100 grams of solution OR
(4) A solution having 36 grams of NaCl in 100 grams of solution etc.
These are concentrations of the given solutions. The maximum possible concentration is solubility.
When the concentration of the solution is small, you say that it is a dilute solution. In the examples given above, (1) is a dilutesolution of NaCl.
When the concentration of the solution is high, you say that it is a concentratedsolution. In the examples given above, (3) is a concentrated solution of NaCl.
“Dilute” and “concentrated” are relative terms used for comparison, and do not indicate the actual concentration. For example, we can say that solution (2) is more concentrated than solution (1). Or we can say that solution (2) is dilute compared to solution (3).
When the concentration is the maximum possible, we say that the solution is saturated. (4) is a saturated solution of NaCl in water at 20 degrees. If you add any more salt to it, it will remain as solid and will not dissolve.
OR
It can be said that solubility of a substance in a given solvent is the amount of that substance which is present in a specified quantity (usually 1 litre) of saturatedsolution at a given temperature.
The two definitions are almost the same because a saturated solution is a solution which contains the maximum amount of solute that can be dissolved in it.
Solubility can have only one value for a given substance at a specified temperature.
For example, the solubility of sodium chloride in water is 36 grams per 100 grams of the solution at 20 degree Celcius. This means that if you take 100 grams of the salt solution and evaporate off all the water, you will get 36 grams of sodium chloride. Another meaning is that if you take 100 grams of water at 20 degrees, you cannot dissolve more than 36 grams of salt in it. This is the maximum possible.
On the other hand, concentration is simply the amount of solute that is present in a given quantity of the solution. This can have any value below solubility.
For example, you can think of various salt solutions having different amounts of salt in it.
(1) A solution having 1.5 grams of NaCl in 100 grams of solution OR
(2) A solution having 5 grams of NaCl in 100 grams of solution OR
(3) A solution having 25 grams of NaCl in 100 grams of solution OR
(4) A solution having 36 grams of NaCl in 100 grams of solution etc.
These are concentrations of the given solutions. The maximum possible concentration is solubility.
When the concentration of the solution is small, you say that it is a dilute solution. In the examples given above, (1) is a dilutesolution of NaCl.
When the concentration of the solution is high, you say that it is a concentratedsolution. In the examples given above, (3) is a concentrated solution of NaCl.
“Dilute” and “concentrated” are relative terms used for comparison, and do not indicate the actual concentration. For example, we can say that solution (2) is more concentrated than solution (1). Or we can say that solution (2) is dilute compared to solution (3).
When the concentration is the maximum possible, we say that the solution is saturated. (4) is a saturated solution of NaCl in water at 20 degrees. If you add any more salt to it, it will remain as solid and will not dissolve.
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