Solubility and Chromatography

Question 1

Soluble salts

Answer 1

ALL: Nitrates, Ammonium, Potassium, Sodium
All Chlorides except Lead and Silver
Most Sulfates, not Barium or Calcium or Lead
No Carbonates or Hydroxides (except first three)

Question 2

Slightly soluble salts

Answer 2

Calcium sulfate, Barium hydroxide and Calcium hydroxide

Question 3

Insoluble salts

Answer 3

All carbonates except the three
Nearly all hydroxides except the three + Barium and Calcium hydroxide
Barium and Lead sulfate
Lead and Silver chloride

Question 4

Paper chromatography

Answer 4

1) Spot of ink on chromatography paper
2) Paper hung in a sealed boiling tube containing some solvent
3) Solvent soaks up the paper
The distance moved up the paper shows the solubility of the substance- the higher it moves the more soluble.