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Ammonia

The amount of...

Question

The amount of a solute present in its saturated solution at a given temperature is called the solubility of the solute at that temperature.

The solubility of an unknown substance in water at 50°C is 30g.

The solubility of the given substance in water at 100°C would be

A

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B

30g

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C

Less than 30g

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D

More than 30g

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Solution

The correct option is D More than 30g
With an increase in the temperature of a solution, the solubility increases. Therefore, the solubility of a substance at 100°C would be more than 30 g.

The correct answer is D.

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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

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(b)

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and leaves the solution to cool at room temperature. What would she observe as the solution cools? Explain.

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Find the solubility of each salt at

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(d)

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

Q. Question 3 (c)
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).

c. Find the solubility of each salt at 293 K. Which salt has the highest solubility at this 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 K?

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.

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