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Saturated Solution

Prachi makes ...

Question

Prachi 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.

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Solution

Prachi makes a saturated solution of Potassium chloride in water at $353 K$ and leaves the solution to cool at room temperature.
Observation- When a saturated solution of potassium chloride is coded at $353 K$ , the amount of potassium chloride which exceeds its solubility at lower temperature separates out as crystals.

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Q. Question 3 (b)
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).

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.

Q. Question 3 (b)
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).

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.

Q. What would you observe when a saturated solution of potassium chloride prepared at

60^{0} C

is allowed to cool to room temperature?

Q. 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).

(a)

What mass of potassium nitrate would be needed to produce a saturated solution of potassium nitrate in

50

grams of water at

313

(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?

Q. 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).

Substance dissolved	Temperature in K
Substance dissolved	283	293	313	333	353
Potassium nitrate	21	32	62	106	167
Sodium chloride	36	36	36	37	37
Potassium chloride	35	35	40	46	54
Ammonium 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. What salt has the highest solubility at this temperature?

(d) What is the effect of change of temperature on the solubility of a salt?

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