Solubility of gases

Question 1

What are the four states of solubility

Answer 1

Unsaturated, Saturated, Supersaturated and bit of an exception precipitate

Question 2

What is the solubility-temp trend for salts and why

Answer 2

higher temperature more soluble. This is because generally dissolution of salts is endothermic

Question 3

What is the solubility-temp trend for gases and why

Answer 3

Higher temperature, less soluble. This is because generally dissolution of gases is exothermic

Question 4

What is molarity

Answer 4

moles per dm3 or moles per litre (the same)

Question 5

What is normality

Answer 5

the mass per mole of charge (also known as equivalent weight) per dm3

Question 6

What is the solubility-pressure trend for gases and why

Answer 6

Increase in pressure increases solubility. Increasing pressure increases the concentration so more is dissolved

Question 7

What does the solubility of gases in water depend on

Answer 7

Temperature, pressure and salt concentration

Question 8

what is the equation for the solubility of gases

Answer 8

solubility = henrys law constant x partial pressure