Chem Solubility Rules

Question 1

How does the solubility of a solid in a liquid change with temperature?

Answer 1

solubility increases with increasing temperature (think sugar in coffee)

Question 2

How does the solubility of a gas in liquid change with temperature?

Answer 2

solubility decreases with increasing temperature (think pop in the fridge vs not)

Question 3

How does the solubility of a gas in liquid change with pressure?

Answer 3

solubility increases with increasing pressure

Question 4

Are group 1 salts soluble or insoluble?

Answer 4

they are all soluble (Na+, K+ etc)

Question 5

Are NH4+ salts soluble or insoluble?

Answer 5

they are all soluble

Question 6

Are NO3-, ClO4- and C2H3O2- salts soluble or insoluble?

Answer 6

they are all soluble

Question 7

Are Ag+, Pb2+/4+, Hg2+/3+ salts soluble or insoluble?

Answer 7

they are insoluble UNLESS paired with NO3-, ClO4- or C2H3O2- (then they are soluble)

Question 8

Distinguish between dissolution and dissociation

Answer 8

dissolution is the process of dissolving

dissociation is how ionic compounds will split into ions, this occurs AFTER dissolution

Question 9

What is an electrolyte?

Answer 9

free ions in solution i.e. Na+, Cl- that cause the solution to conduct electricity