Halogens

Question 1

Fluorine

Answer 1

Yellow gas

Question 2

Chlorine

Answer 2

Yellow-green gas

Question 3

Bromine

Answer 3

Red-brown liquid and vapour

Question 4

Iodine

Answer 4

Grey-black solid and A purple vapour

Question 5

Colours of chlorine, bromine and iodine in water

Answer 5

Chlorine - Green
Bromine - yellow
Iodine - Brown

Question 6

Colours of chlorine, bromine and iodine in hexane

Answer 6

Chlorine - Colourless
Bromine - Red
Iodine - Purple

Question 7

Observations of Fluoride and concentrated sulfuric acid

Answer 7

Misty fumes, solid disappears, pungent smell, Heat released and gas produced

Question 8

Observation of Chloride and concentrated sulfuric acid

Answer 8

Misty fumes, solid disappears, pungent smell, heat released and gas produced

Question 9

Observations of Bromide and concentrated sulfuric acid

Answer 9

Misty fumes, solid disappears, pungent smell, heat released, gas produced and red-brown vapour appears

Question 10

Observation of Iodide and concentrated sulfuric acid

Answer 10

Misty fumes, solid disappears, pungent smell, heat released, gas produced, yellow solid appears, grey-black solid appears, purple vapour

Question 11

Reactions of Fluoride, Chloride, Bromide and Iodide with concentrated phosphoric acid

Answer 11

Misty fumes