Question

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27. Write the balanced equations for the following chemical reactions and recognise
the type of reaction in each case :

(1) Zinc carbonate (s) - Zinc oxide (s) + Carbon dioxide (g)
(2) Hydrogen (g) + Chlorine (g) –Hydrogen chloride (g)
(3) Magnesium (s) + Hydrochloric acid (aq) -
Magnesium chloride (aq) + Hydrogen (g)​

Answer 1

1, 2 KBr(aq) + BaI2(aq) = 2 KI(aq) + BaBr2(aq)

2. ZnCO3(s) = ZnO(s) + CO2(g)

3. H2(g) + Cl2(g) = HCl(g)