Question

3.
Pragya tested the solubility of three different substances a
different temperatures and collected the data as given below
(results are given in the following table, as grams of substance
dissolved in 100 grams of water to form a saturated solution),
Substance Dissolved Temperature in K
283 293
Solubility
313
333
353
36
37
21 32
62
Potassium nitrate
106
167
Sodium chloride
36
36 37
Potassium chloride 35 35 40 46 54
Artimonium chloride 24 37 41 55 66
(a) What mass of 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? Explain
(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?

Answer 1

Answer:

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