Practice Solubility in Chemistry

Use these practice problems to test your method after reviewing the concept explanation and worked examples.

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Quick Recap

The maximum amount of a solute that can dissolve in a given quantity of solvent at a specific temperature and pressure, typically expressed as grams.

How much can dissolve before no more will. Sugar: high solubility. Sand: zero.

Showing a random 20 of 50 problems.

Example 1

medium

A solution has

42\,\text{g}

of salt in

150\,\text{g}

water at

25°\text{C}

. The solubility at

25°\text{C}

30\,\text{g}/100\,\text{g}

. Classify the solution.

Example 2

challenge

Gas solubility follows S = k times P. If S = 0.05 mol/L at 2 atm, what is S at 5 atm?

Example 3

medium

Using a solubility curve, determine how many grams of

\text{KClO}_3

can dissolve in

100

g of water at

80°\text{C}

if the solubility is

40\,\text{g/100 g water}

. If the solution is cooled to

30°\text{C}

where the solubility is

10\,\text{g/100 g water}

, how much crystallizes out?

Example 4

hard

25°\text{C}

\text{Ca(OH)}_2

solubility is

0.165\,\text{g}/100\,\text{mL}

. What is the molar solubility? (

M = 74.1\,\text{g/mol}

)

Example 5

easy

Solubility of a gas in water decreases as the temperature ____.

Example 6

easy

A salt has solubility 20 g per 100 g water. What is the maximum mass that dissolves in 50 g water?

Example 7

challenge

Common-ion effect:

\text{AgCl}

has

K_{sp} = 1.8 \times 10^{-10}

. Find the molar solubility of

\text{AgCl}

0.10\,\text{M}

\text{NaCl}

solution.

Example 8

challenge

Solubility is 50 g per 100 g water. A 300 g sample of saturated solution is evaporated to dryness. How much salt is recovered?

Example 9

medium

25°\text{C}

, the solubility of

\text{CaSO}_4

0.21\,\text{g/100 mL}

. If a student adds

1.0

g of

\text{CaSO}_4

200

mL of water, will it all dissolve? How much remains undissolved?

Example 10

easy

For most solid solutes, raising the temperature usually does what to solubility?

Example 11

medium

Solubility is 28 g per 100 g water. How much salt is needed to saturate 150 g of water?

Example 12

easy

A student claims sugar 'isn't there anymore' after stirring into water. What is the correct view in terms of solubility?

Example 13

medium

At what temperature reading does a solubility curve cross from solid behavior to gas behavior in terms of temperature dependence? Explain why the two slope signs differ.

Example 14

medium

A saturated solution at 80 C holds 80 g salt per 100 g water; at 20 C it holds 30 g per 100 g. How much crystallizes out when cooled?

Example 15

hard

A student prepares

200\,\text{g}

of saturated

\text{NaCl}

solution at

20°\text{C}

(solubility

36\,\text{g}/100\,\text{g}

water). Calculate the mass of

\text{NaCl}

and mass of water in the solution.

Example 16

medium

A solution is described as supersaturated. What single small action typically forces immediate crystallization?

Example 17

easy

A salt has solubility

20\,\text{g}/100\,\text{g}

water at

25°\text{C}

. What is the maximum mass of salt that can dissolve in

300\,\text{g}

of water at

25°\text{C}

Example 18

easy

A solution holds the maximum solute it can at a given temperature. What is this solution called?

Example 19

challenge

At 60 C solubility is 110 g per 100 g water. A solution made with 150 g water is saturated, then cooled to 20 C where solubility is 40 g per 100 g. How much salt crystallizes?

Example 20

easy

True or false: BaSO

_4

is highly soluble in water under standard solubility rules.

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Related Concepts

Solution Precipitation Reaction Dilution