Chemichal Analysis

Question 1

Flame test

Answer 1

Dip nichrome wire in HCL then dip in compound and hold in hottest region of a roaring flame.
Lithium - crimson 
Sodium - orange 
Potassium - lilac 
Calcium - brick red

Question 2

How do you test for amonium

Answer 2

Add sodium hydroxide solution and warm. Amonia gass will be produced which turns moist litmus paper blue

Question 3

How do you test for copper iron 3 and iron 3

Answer 3

Add sodium hydroxide solution . Copper - pale blue precipitate of copper hydroxide
Iron - dirty green precipitate
Iron 3 - rusty brown precipitate

Question 4

How do you test for sulphate

Answer 4

Add hydrochloride acid then barium chloride
White precipitate of barium sulphate formed
Carbonate - add hcl and bubble the gas through limewater , CO2 will be produced which turns limewater cloudy

Question 5

Chlorine test

Answer 5

Blue litmus paper bleached white

Question 6

What happens when c02 is bubbled through limewater

Answer 6

White precipitate of calcium carbonate formed

Question 7

Test for water and

Answer 7

Pass vapour through anhydrous copper súlpate crystals and they will turn for white to blue