LT#1: Dissolving and Solubility

Question 1

Is making a solution a physical or chemical reaction?

Why?

Answer 1

Physical

Dissolving is a state change and can be reversed

Question 2

Define Solute

Answer 2

Substance that dissolves

Question 3

Define Solvent

Answer 3

Substance that dissolves the solute. It is present in the largest amount.

Question 4

Define Solution

Answer 4

A homogeneous mixture where one substance dissolves into another.

Question 5

Define Solubility

Answer 5

The maximum amount of solute that dissolves in a given quantity of solvent at a certain temperature.

Question 6

Define Soluble

Answer 6

> 1 g per 100 ml will dissolve

Question 7

Define Insoluble

Answer 7

<0.1g per 100 ml will dissolve

Question 8

Define Sparingly or Slightly Soluble

Answer 8

Between 0.1g and 1g will dissolve

Question 9

Define Unsaturated Solution

Answer 9

Can dissolve more solute

Question 10

Define Saturated Solution

Answer 10

No more solute will dissolve. Sometimes extra solid visible in container.

Question 11

What is necessary for a solute to dissolve?

Answer 11

Solute must be attracted to Solvent by a compatible IMF

Question 12

The general solubility rule is…

Answer 12

“like dissolves like”

Question 13

How does increasing temperature affect the solubility of a solid solute?

Answer 13

Increases solubility

Question 14

How does increasing temperature affect the solubility of a liquid solute?

Answer 14

No Affect

Question 15

How does increasing temperature affect the solubility of a gas solute?

Answer 15

Decreases solubility

Question 16

How does increasing pressure affect the solubility of solid and liquid solutes?

Answer 16

No Affect

Question 17

How does increasing pressure affect the solubility of a gas solute?

Answer 17

Increases solubility

Question 18

What IMF causes ionic compounds to dissolve in water?

Answer 18

Ion-dipole attractions (attraction between a full charge and a partial charge)