Salts

Question 1

What types of salts do hydrochloric, nitric, and sulfuric acids produce

Answer 1

Chloride
Nitrate
Sulfate

Question 1

How is a soluble salt created

Answer 1

Reacting an acid with a suitable insoluble reactant

Question 2

Give an example

Answer 2

Metal
Carbonate
Metal oxide
Metal hydroxide

Question 3

State the process of making a soluble salt

Answer 3

1. Add insoluble reactant to the acid in beaker, stir to mix, keep adding until in excess so all acid has reacted
2. Filter the solution so only the salt and water remain
3. Heat solution over a water bath, and stop when crystals form around the edges, this is when the solution is saturated
4. Leave the solution at room temp for 2 days, so there’s time for large crystals to form
5. Dry crystals by dabbing with paper

Question 4

State the process of making a soluble salt from an insoluble oxide

Answer 4

1. Add insoluble reactant to the acid in beaker, stir to mix, keep adding until in excess so all acid has reacted
2. Filter the solution so only the salt and water remain
3. Pour filtrate into a evaporating basin, place on a water bath and heat until about half of the water has evaporated, stop heating when small crystals start forming around the edges
4. Pour remaniant solution into a watch glass and leave in a warm/dry area for crystallisation to occur
5. Dry crystals by dabbing with paper

Question 5

Name 3 hazards

Answer 5

Acid is corrosive
Burns from bunsen burner
Hair and clothes may catch fire

Question 6

Name 3 precautions

Answer 6

Use dilute hydrochloric acid
Don’t touch hot apparatus
Tie back hair and tuck in loose clothing