chem preperation of salts Flashcards
(9 cards)
1
Q
Hydrochloric acid
A
makes chlorides
2
Q
Sulfuric acid (H 2 SO 4 ) makes
A
sulfates
3
Q
Nitric acid (HNO 3 ) makes
A
nitrates
4
Q
solubility facts
A
All nitrates are soluble in water
All sodium, potassium, ammonium salts are soluble in water.
5
Q
ex of insoluble salts
A
1.Calcium sulfate 2. Barium sulfate 3.lead (II) iodide
4. Silver chloride
6
Q
Why is excess metal or metal carbonate added?
A
To react all acid molecules completely.
7
Q
How do we know there is excess metal in the reaction mixture ?
A
When bubbles of gas stopped, unreacted metal or metal carbonate
settles at the bottom of the container
8
Q
Why do we filter?
A
remove unreacted excess
9
Q
How do we dry the crystals?
A
pressing it between filter papers.
