Solubility of compounds

Question 1

solubility of nitrates?

Answer 1

All nitrates are soluble.

Question 2

solubility of group 1 and ammonium ions?

Answer 2

All compounds of group 1 and ammonium ions are soluble.

Question 3

solubility of chlorides?

Answer 3

All chlorides except for those of Ag, Pb and Hg are soluble.

Question 4

solubility of hydroxides?

Answer 4

All hydroxides are insoluble (except those of group 1, ammonium, barium and strontium). (Calcium hydroxide is ‘sparingly’ soluble and a solution is known as limewater). Aluminium (also zinc and chromium) hydroxide is amphoteric and dissolves in excess hydroxide

Question 5

solubility of metal carbonates?

Answer 5

All metal carbonates (except those of group 1, and ammonium) are insoluble

Question 6

insoluble black solid?

Answer 6

might be carbon (graphite), iodine or MnO 2 .

Question 7

insoluble yellow solid?

Answer 7

An insoluble yellow solid might be sulphur