Solubility + Salt Colours

Question 1

Which salts are always soluble?

Answer 1

SPAN salts:
Sodium, Potassium, Ammonium, Nitrates

Question 2

What halides are soluble?

Halides are salts made from Group 17 elements

Answer 2

All halides except Silver and Lead (II)
halides are soluble.

Question 3

What sulfates are soluble?

Answer 3

All sulfates except
Barium, Lead (II) and Calcium sulfates are soluble

Question 4

What carbonates are soluble?

Answer 4

Only Sodium, Potassium and Ammonium carbonates are soluble

Question 5

What hydroxides are soluble?

Answer 5

Only Group 1 and heavier group 2 hydroxides are soluble

Question 6

What metals are soluble?

Answer 6

All metals are insoluble

Question 7

What metal oxides are soluble?

Answer 7

Only Group 1 and heavier group 2 metal oxides are soluble

Question 8

What colour are iodide solutions and precipitates?

Answer 8

Solution is colourless, precipitate is yellow

Question 9

What colour are chloride solutions and precipitates?

Answer 9

Solution is colourless, precipitate is white

Question 10

What colour are Group 1 and 2 salt solutions and precipitates?

Answer 10

Solution is colourless, precipitate is white

Question 11

What colour are copper salt solutions and precipitates?

Answer 11

Solution is blue or green, precipitate is blue (except CuCO₃ which is green)

Question 12

What colour are iron(II) salt solutions and precipitates?

Answer 12

Solution is pale green, precipitate is dirty green

Question 13

What colour are iron(III) salt solutions and precipitates?

Answer 13

Solution is yellow, precipitate is reddish brown