Question

Pragya tested the solubility of three different substances at different temperatures and collected the
data as given below. Result are given in the following table, as grams of substance dissolved in 100
grams of water to form a saturated solution.
Substance Dissolved
Potassium nitrate
Sodium chloride
Potassium chloride
Ammonium chloride
Temperature in K
283 | 293 313 333 | 353
21 | 32 | 62 | 106 | 167
36 36 36 37 37
35 | 35 40 | 46 54
24 37 41 55 66
(a) Potassium nitrate would be needed to produce a saturated solution of potassium nitrate in 50
grams of water at 313 K?
(b) Pragya makes a saturated solution of potassium chloride in water at 353 K and leaves the solution
to cool at room temperature. What would she observe as the solution cools?
(c) Find the solubility of each salt at 293 K. Which salt has the highest solubility at this temperature?
(d) What is the effect of change of temperature on the solubility of a salt?
Chemistry (2017-20) Z je motor secund we pure Th.1265​

Answer 1

Answer:

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