Solubility - Unit 2

Question 1

What is solubility?

Answer 1

The solubility of a specific solute is the maximum amount of that solute that can be dissolved in a given quantity of solvent at a given temperature

Question 2

How is solubility expressed?

Answer 2

per 100g of solvent (g/100g)

Question 3

What happens to solubility when temperature increases?

Answer 3

When the temperature increases, the solubility of most solid solutes in a solvent typically increases because the increased kinetic energy helps to break apart the solute particles and dissolve them into the solvent.

Question 4

What is the general rule?

Answer 4

Like dissolves in like

Question 5

If the solute is ionic when is it soluble?

Answer 5

soluble in polar solvents

Question 6

If the solute is polar when is it soluble?

Answer 6

Soluble in polar solvent

Question 7

If the solute is non-polar when is the solvent soluble?

Answer 7

Soluble in non-polar solvent

Question 8

What happens when a solute dissolves in a solvent?

Answer 8

The intermolecular forces must be broken, and new force can form:
1. particles of the solute are separated from one another
2. Particles of the solvent are separated from one another
3. The solute and solvent particles are attracted to each other and make a solution

Question 9

Why do gases become less soluble as solvent temperature increases?

Answer 9

As temperature increases, the gas particles move faster. This means that they cannot interact well with the solvent