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(a) Define a saturated solution.

(b) The solubility of sodium chloride in water is 36 grams at 20oC. What do you mean by this statement? What will happen if 45 grams of sodium chloride is added to water at 20oC?

(c) What will happen if the saturated solution of a substance in water is (i) heated, and (ii) cooled?

Asked by Topperlearning User 24th April 2014, 1:25 PM
Answered by Expert
Answer:

(a) A solution in which no more substance can be dissolved at that temperature is called a saturated solution.

(b) The solubility of sodium chloride in water is 36 grams at 20oC means that a maximum of 36 grams of sodium chloride can be dissolved in 100 grams of water at a temperature of 20oC.

If 45 grams of sodium chloride is added to 100 grams of water at 20oC, then the excess salt will remain undissolved in water.

(c) If the saturated solution of a substance at a particular temperature is heated to a higher temperature, then the solubility of the substance increases and more of substance can be dissolved in it.

If the saturated solution of a substance at a particular temperature is cooled to a lower temperature, then the solubility of the substance decreases and some of the dissolved substance will separate out in the form of solid crystals.

Answered by Expert 24th April 2014, 3:25 PM
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