explain how will you determine solubility of NaNO3 at room temperature.
Answers
Answer:The same mass of a solvent, at the same temperature, has the ability to dissolve, different masses of different solutes. In the above illustration, the solutes with the highest solubility (ability of dissolving to the maximum) in descending order are: NaNO3 > NaCl > KNO3.
Thus, "the solubility of a solute in a solvent, is the number of grams of the solute that can dissolve in 100 grams of that particular solvent, to saturate it at that temperature".
Temperature and Solubility
Temperature plays a very important role in deciding the solubility of solutes.
1. Increase in temperature decreases the solubility of gases in liquids.
If the solute is a gas and the solvent is a liquid, the solubility of the gas decreases with the increase in temperature. For instance, fish can breathe the oxygen dissolved in ordinary water. Take some water from an aquarium, boil it and then cool it back to the temperature of the aquarium and then place a small fish in it for a short while. If it is not shifted back to the aquarium water, it will die soon. Why? As the temperature was raised, boiling expelled the dissolved air. The solubility of air in water decreased by escaping in the form of bubbles. Hence the fish would have almost no dissolved air to breathe in.
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