Question

18.Pragya tested the solubility of three different substances at 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. (Any four) Ix4

Substance Dissolved

Potassium nitrate

Sodium chloride

Potassium chloride

Ammonium chloride

Temperature in K

293

32

36

35

37

313

62

36

40

41

289

21

36

35

24

333

106

37

46

55

353

167

37

54

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:

.Pragya tested the solubility of three different substances at 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. (Any four) Ix4

Substance Dissolved

Potassium nitrate

Sodium chloride

Potassium chloride

Ammonium chloride

Temperature in K

293

32

36

35

37

313

62

36

40

41

289

21

36

Answer 2

C is the correct

please mark as brilliant