Precipitation Of Salts

Question 1

What is a soluble salt?

Answer 1

A soluble salt is a salt that dissolves in water to form a solution.

Question 2

What is an insoluble salt?

Answer 2

An insoluble salt is a salt that does not dissolve significantly in water.

Question 3

True or False: All salts are soluble in water.

Answer 3

False

Question 4

What type of reaction occurs when two soluble salts combine to form an insoluble salt?

Answer 4

A precipitation reaction.

Question 5

Fill in the blank: The process of forming a solid from a solution is called __________.

Answer 5

precipitation

Question 6

Which of the following is a common soluble salt? (a) Barium sulfate (b) Sodium chloride (c) Silver bromide

Answer 6

b) Sodium chloride

Question 7

What is the general equation for a precipitation reaction?

Answer 7

AB(aq) + CD(aq) → AD(s) + CB(aq)

Question 8

True or False: All nitrates are soluble in water.

Answer 8

True

Question 9

What is the main characteristic of a precipitate?

Answer 9

It is an insoluble solid that forms in a solution.

Question 10

Name one method to identify the presence of an insoluble salt in a solution.

Answer 10

Performing a filtration or using a reagent to test for specific ions.

Question 11

What happens when silver nitrate reacts with sodium chloride?

Answer 11

They form a precipitate of silver chloride.

Question 12

Fill in the blank: The solubility product constant is denoted as __________.

Answer 12

Ksp

Question 13

What is the significance of Ksp in precipitation reactions?

Answer 13

It indicates the solubility of a salt in a saturated solution.

Question 14

Which of the following ions forms an insoluble salt with sulfate? (a) Calcium (b) Potassium (c) Sodium

Answer 14

a) Calcium

Question 15

True or False: Lead(II) iodide is an insoluble salt.

Answer 15

True

Question 16

What is the effect of temperature on the solubility of salts?

Answer 16

Generally, solubility increases with temperature for most salts.

Question 17

Fill in the blank: A solution that contains the maximum amount of solute that can dissolve at a given temperature is called __________.

Answer 17

saturated solution

Question 18

What is a common test for the presence of sulfate ions?

Answer 18

The addition of barium chloride, which produces a white precipitate of barium sulfate.

Question 19

Which salt is used in a common identification test for chloride ions?

Answer 19

Silver nitrate.

Question 20

What color precipitate does copper(II) hydroxide form?

Answer 20

Blue precipitate.

Question 21

True or False: All carbonates are insoluble in water.

Answer 21

False

Question 22

What is the formula for the precipitate formed when calcium ions react with carbonate ions?

Answer 22

CaCO3 (calcium carbonate).

Question 23

Fill in the blank: The __________ test is used to confirm the presence of ammonium ions in a solution.

Answer 23

litmus

Question 24

What is the visual indication of a precipitation reaction?

Answer 24

The appearance of a solid or cloudiness in the solution.

Question 25

Which of the following is a characteristic of a soluble salt? (a) Forms a precipitate (b) Dissolves in water (c) Does not conduct electricity

Answer 25

b) Dissolves in water

Question 26

What is the main component of a precipitation reaction?

Answer 26

Ions in solution that combine to form an insoluble compound.

Question 27

True or False: Hydroxides of alkali metals are generally soluble.

Answer 27

True

Question 28

Fill in the blank: The __________ method can be used to separate a precipitate from a liquid.

Answer 28

filtration

Question 29

What type of ions typically form soluble salts?

Answer 29

Sodium, potassium, and ammonium ions.

Question 30

What type of salt is formed when an acid reacts with a base?

Answer 30

A soluble salt.

Question 31

What is the outcome of mixing two clear solutions that yield a cloudy solution?

Answer 31

A precipitation reaction has occurred.

Question 32

True or False: Most sulfides are soluble in water.

Answer 32

False

Question 33

What is the primary factor that determines whether a salt is soluble or insoluble?

Answer 33

The nature of the ions and their interactions in solution.