Question

Write the balanced chemical equation for the following reactions :

Zinc + Silver nitrate ————> ………. + ………..

Lead oxide + Carbon ————> ………. + ………..

Ferrous sulphate crystal ——heat ——> ………. + ……….. + ………..​

Answer 1

• Zinc + Silver nitrate → Zinc nitrate + Silver. Zn(s) + 2AgNO3(s) → Zn(NO3)2 + 2Ag

• Lead oxide contains the cation Pb+2, and the oxide anion O-2. ... The anion, O-2, combines with carbon to form carbon dioxide. Lead oxide reacts with coke and makes lead metal and carbon dioxide. Because lead lost oxygen, it has been reduced.

• On heating, ferrous sulphate crystals lose water and anhydrous ferrous sulphate (FeSO4) is formed. So their colour changes from light green to white. On further heating, anhydrous ferrous sulphate decomposes to form ferric oxide (Fe2O3), sulphur dioxide (SO2) and sulphur trioxide (SO3).

Answer 2

Answer:

Zn + 2AgNO3 --------> 2Ag + Zn(NO3)2

2PbO + C -------> 2Pb + CO2

FeSO4.5H2O   ------HEAT----> FeSO4 + 5H2O

2FeSO4 -----------heat ------->Fe203 + SO2 +SO3

Explanation: