NCERT Question 7

Write the balanced chemical equations for the following reactions.

(a) Calcium hydroxide + Carbon dioxide → Calcium carbonate + Water
(b) Zinc + Silver nitrate → Zinc nitrate + Silver
(c) Aluminium + Copper chloride → Aluminium chloride + Copper
(d) Barium chloride + Potassium sulphate → Barium sulphate + Potassium chloride

 

Answer:

(a)

Word Equation:
Calcium hydroxide + Carbon dioxide → Calcium carbonate + Water

Balanced Chemical Equation:

Ca(OH)2 + CO2 → CaCO3 + H2O


(b)

Word Equation:
Zinc + Silver nitrate → Zinc nitrate + Silver

Balanced Chemical Equation:

Zn + 2AgNO3 → Zn(NO3)2 + 2Ag


(c)

Word Equation:
Aluminium + Copper chloride → Aluminium chloride + Copper

Balanced Chemical Equation:

2Al + 3CuCl2 → 2AlCl3 + 3Cu


(d)

Word Equation:
Barium chloride + Potassium sulphate → Barium sulphate + Potassium chloride

Balanced Chemical Equation:

BaCl2 + K2SO4 → BaSO4 + 2KCl

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