Solubility of salts and precipitation - questions

Question 1

What is solubility?

Answer 1

The ability of a substance to dissolve in a solvent.

Question 2

True or False: All salts are soluble in water.

Answer 2

False

Question 3

What is a precipitation reaction?

Answer 3

A chemical reaction that results in the formation of an insoluble solid from soluble reactants.

Question 4

Fill in the blank: The solubility of a salt is often expressed in _____ per liter of solution.

Answer 4

grams

Question 5

What is the common rule for the solubility of nitrates?

Answer 5

Nitrates are generally soluble in water.

Question 6

Which of the following is typically insoluble: AgCl, NaCl, or KNO3?

Answer 6

AgCl

Question 7

What effect does temperature generally have on the solubility of solids in liquids?

Answer 7

Solubility usually increases with temperature.

Question 8

True or False: All sulfate salts are soluble.

Answer 8

False

Question 9

What is the general solubility rule for carbonates?

Answer 9

Most carbonates are insoluble, except those of alkali metals and ammonium.

Question 10

What does the term ‘Ksp’ stand for?

Answer 10

Solubility product constant.

Question 11

In a saturated solution, what is the relationship between the rate of dissolution and the rate of precipitation?

Answer 11

They are equal.

Question 12

Fill in the blank: The formation of a precipitate can be predicted by calculating the _____ of the ions in solution.

Answer 12

ionic product

Question 13

What is the significance of the solubility product constant (Ksp)?

Answer 13

It indicates the extent to which a salt will dissolve in solution.

Question 14

True or False: pH can affect the solubility of certain salts.

Answer 14

True

Question 15

Which ions typically lead to the formation of insoluble phosphates?

Answer 15

Calcium, barium, and lead.

Question 16

What happens to the solubility of a gas in a liquid as temperature increases?

Answer 16

Solubility decreases.

Question 17

Multiple Choice: Which of the following is a soluble salt? A) BaSO4 B) NaCl C) PbCl2

Answer 17

B) NaCl

Question 18

What is a common method to remove soluble salts from a solution?

Answer 18

Evaporation

Question 19

Fill in the blank: The presence of a common ion will _____ the solubility of a salt.

Answer 19

decrease

Question 20

True or False: Silver bromide (AgBr) is soluble in water.

Answer 20

False

Question 21

What effect does pressure have on the solubility of gases in liquids?

Answer 21

Increased pressure increases solubility.

Question 22

What type of reaction occurs when mixing solutions of barium chloride and sodium sulfate?

Answer 22

Precipitation reaction

Question 23

What is the formula for calculating the solubility product constant (Ksp)?

Answer 23

Ksp = [A^n+][B^m-] where A and B are the ions.

Question 24

Which of the following is an insoluble hydroxide? A) NaOH B) Ca(OH)2 C) Fe(OH)3

Answer 24

C) Fe(OH)3

Question 25

What type of ions generally form soluble salts with alkali metals?

Answer 25

Nitrate and acetate ions.

Question 26

Silver nitrate + ammonium chloride (will a precipitation will form and what it is)

Answer 26

yes AgCl

Question 27

Copper (II) sulfate + sodium bromide (will a precipitation will form and what it is)

Answer 27

no

Question 28

Magnesium nitrate + sodium carbonate (will a precipitation will form and what it is)

Answer 28

yes MgCO₃

Question 29

Ammonium hydroxide + potassium carbonate (will a precipitation will form and what it is)

Answer 29

no

Question 30

Zinc sulfate + barium chloride (will a precipitation will form and what it is)

Answer 30

yes BaSO₄