Solutions Test

Question 1

A solution that contains more than the maximum amount of solute that is unstable

Answer 1

supersaturated

Question 2

A homogeneous mixture

Answer 2

solution

Question 3

Does not conduct electricity when dissolved in water due to the lack of ions

Answer 3

non-electrolyte

Question 4

substance doing the dissolving, usually present in a greater amount

Answer 4

solvent

Question 5

Liquids that do not mix easily, forming a heterogeneous mixture

Answer 5

immiscible

Question 6

A solution that holds the maximum amount of solute per amount of solution under given conditions

Answer 6

saturated solution

Question 7

A general term for a solution with a large amount of solute

Answer 7

concentrated solution

Question 8

Substance being dissolved, usually present in a lesser amount

Answer 8

solute

Question 9

A general term for a solution with a small amount of solute

Answer 9

dilute solution

Question 10

Conducts electricity when dissolved in water due to the presence of ions

Answer 10

electrolyte

Question 11

A solution that has less than the maximum amount of solute dissolved

Answer 11

unsaturated

Question 12

Liquids that mix easily, forming a homogeneous mixture

Answer 12

miscible

Question 13

How to make a solid dissolve faster

Answer 13

agitate, increase surface area, increase temp

Question 14

How to make a solid solute dissolve

Answer 14

increase the temperature

Question 15

Why won’t oil and water mix?

Answer 15

The polar water molecules have partial charges while the nonpolar oil has no charges. The partial charges on water are attracted to other water molecules with partial charges rather than the noncharged oil. The IMF of water bonding with water are stronger than the IMF of water bonding with oil.

Question 16

How to make more of a gas solute dissolve

Answer 16

increase the pressure, decrease the temp

Question 17

What mass of NH4Cl can dissolve in 100 mL of water at 90C?

(just include the value not the unit)

Answer 17

70

Question 18

Which compound is the most soluble at 10C?

Answer 18

KI

Question 19

80 g of NaNO3 is added to 100 mL of water. How many more grams should be added to have a saturated solution at 50C?

Answer 19

35 (32-37)

Question 20

A supersaturated solution of potassium nitrate is made by saturating a 100mL solution at 60º C then cooling it to 10ºC. When the solution is disturbed, what mass of potassium nitrate will precipitate out of solution? (just include the value not the unit)

Answer 20

80 (76-80)

Question 21

When 130 grams of KNO3 is dissolved in 100 mL of water (and ALL of it is dissolved) at 60C, is the solution unsaturated, saturated, or supersaturated?

Answer 21

super saturated

Question 22

How many grams of KCl can dissolve at 10 oC? (just include the value not the units)

Answer 22

30

Question 23

Water freezes at O degrees Celsius and boils at 100 degrees Celsius. I have added salt to the water. Describe the new boiling point.

Answer 23

Higher than 100C

Question 24

Water freezes at O degrees Celsius and boils at 100 degrees Celsius. I have added salt to the water. Describe the new freezing point.

Answer 24

Lower than 0C