Question

What do you observe when the following are heated :
1. Copper carbonate
2. Copper nitrate
3. Ammonium chloride
4. Iodine
5. Copper sulphate

Answer 1

Explanation:

When green copper carbonate{CuCO3} is heated it decomposes forming copper oxide {CuO} and carbon dioxide {CO2}.

When green copper carbonate{CuCO3} is heated it decomposes forming copper oxide {CuO} and carbon dioxide {CO2}.Copper nitrate is a bright blue crystalline solid containing three molecules of water. When it is heated first it loses the water molecule, on further heating it decomposes to give reddish brown gas, nitrogen dioxide and oxygen.

When green copper carbonate{CuCO3} is heated it decomposes forming copper oxide {CuO} and carbon dioxide {CO2}.Copper nitrate is a bright blue crystalline solid containing three molecules of water. When it is heated first it loses the water molecule, on further heating it decomposes to give reddish brown gas, nitrogen dioxide and oxygen.Ammonium chloride decomposes readily when heated, but condenses in the cooler area at the top of the test tube. This is a reversible reaction, where the ammonium chloride decomposes into the gases ammonia (NH3) and hydrogen chloride (HCl)

When green copper carbonate{CuCO3} is heated it decomposes forming copper oxide {CuO} and carbon dioxide {CO2}.Copper nitrate is a bright blue crystalline solid containing three molecules of water. When it is heated first it loses the water molecule, on further heating it decomposes to give reddish brown gas, nitrogen dioxide and oxygen.Ammonium chloride decomposes readily when heated, but condenses in the cooler area at the top of the test tube. This is a reversible reaction, where the ammonium chloride decomposes into the gases ammonia (NH3) and hydrogen chloride (HCl)When iodine is heated, it sublimes.

When green copper carbonate{CuCO3} is heated it decomposes forming copper oxide {CuO} and carbon dioxide {CO2}.Copper nitrate is a bright blue crystalline solid containing three molecules of water. When it is heated first it loses the water molecule, on further heating it decomposes to give reddish brown gas, nitrogen dioxide and oxygen.Ammonium chloride decomposes readily when heated, but condenses in the cooler area at the top of the test tube. This is a reversible reaction, where the ammonium chloride decomposes into the gases ammonia (NH3) and hydrogen chloride (HCl)When iodine is heated, it sublimes.The blue coloured copper sulphate crystals turns white due to the loss of water molecules. The formula of copper sulphate is CuSO4. 5H2O. When copper sulphate is heated, it looses water molecules and hence it looses blue colour.

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Answer 2

Answer:

See down

Explanation:

Copper carbonate decomposes into copper oxide and carbon dioxide

Copper nitrate changes its colour from green to black

Ammonium chloride forms a basic gas NH3 and an acidic gas HCL

Iodine sublimates to form violet colour vapours and no residue is left

Copper sulphate on heating crumbles down to form a white amorphous powder .

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