Tags & Description
Colour Observation
Observe its colour
blue/green = may be copper
brown = may be iron
Action of Heat - Instructions
small amount of salt
heated in dry test tube
Action of Heat - a colorless gas with a pungent smell, forms dense white fumes when a glass rod dipped in Conc. HCl is brought close to its mouth
Ammonium salt
Action of Heat - a reddish brown gas
Nitrate salt
Action of Heat - Salt is yellow when hot and white when cold
MAY BE zinc salt
Flame test - Instructions
small amount of salt in a watch glass
add a drop of Conc. HCl
form paste
Take paste at the charred end of the splinter and put it near Bunsen flame
Flame test: Bluish green flame
Copper salt
Flame test: Apple green
Barium salt
Flame test: Brick red
Calcium salt
Action of dil. HCl - Instructions
take a small amount of salt in a test tube
add 1mL of dil. HCl to it
heat in Bunsen flame
Action of dil. HCl - Brisk effervescence, 3A colourless, odouless gass turning lime, water milky evolves
Carbonate
Action of dil. HCl - Colourless gas, rotten egg smell, turns paper dipped in lead acetate shining black
Sulphide
Action of Conc. H₂SO₄ - Instructions
small amount of salt in DRY test tube
add 0.5 mL of Conc. H₂SO₄
gently heat in Bunsen burner
Action of Conc. H₂SO₄ -
colourless gas
dense white fumes when glass rod dipped in ammonia is brought close to its mouth
Chloride
Action of Conc. H₂SO₄ -
reddish brown gas
turns moist flourescein paper green
bromide
Action of Conc. H₂SO₄ -
reddish brown gas turning acidified ferrous sulphate paper green
Nitrate
Action of MnO₂ and Conc. H₂SO₄ - Instructions
take a small amount of salt in a test tube
add pinch of MnO
add 0.5mL of Conc. H₂SO₄
heat in Bunsen flame
Action of MnO₂ and Conc. H₂SO₄
greenish yellow gas
turns starch iodine paper blue
chloride
Action of MnO₂ and Conc. H₂SO₄
reddish brown gas
turns moist fluorescein paper red
bromide
Action of Conc. H₂SO₄ and copper turning - Instructions
small quantity of salt in dry test tube
few copper turnings
1mL of Conc. H₂SO₄
gently heat
What is the order of the column titles, left to right?
Serial Number
Experiment
Observation
Inference
Salt 1 - Lead Nitrate
absence of copper/iron salts
may be sulphate nitrate chloride
presence of nitrate salt
absence of copper, calcium, barium
presence of nitrate
presence of nitrate
Salt 2 - Copper Sulphate
may be copper sulphate
may be sulphate, nitrate, chloride
absence of carbonate nitrate ammonium and zinc
presence of copper salt
absence of sulphide and carbonate
absence of chloride, bromide, nitrate
Salt 3 - copper carbonate
may be copper
may be carbonate or sulphide
may be carbonate
presence of copper salt
carbonate is confirmed
absence of chloride, bromide, nitrate
Salt 4 - Ferric chloride
may be iron salt
may be sulphate, nitrate, chloride
ansence of ammonium, nitrate, zinc salts
absence of copper, calcium, barium
absence of carbonate and sulphide and nitrate
presence of chloride
Salt 5 - Zinc Sulphate
absence of copper and iron salts
maybe sulphate, nitrate, chloride
may be zinc salt
absence of copper, calcium, barium
absence of carbonate, sulphide, nitrate
absence of chloride bromide nitrate
Salt 6 - Zinc Sulphide
absence of copper and iron
may be sulphide, carbonate
may be a zinc salt
absence of copper, calcium, barium
sulphide
absence of chloride, bromide, nitrate