Chapter 1

NCERT
Class 10
Science
Solutions
8. Write the balanced chemical equation for the following and identify the type of reaction in each case:

Question:

Write the balanced chemical equation for the following and identify the type of reaction in each case:

(a) Potassium bromide(aq) + Barium iodide(aq) → Potassium iodide(aq) + Barium bromide(s)

(b) Zinc carbonate(s) → Zinc oxide(s) + Carbon dioxide(g)

(c) Hydrogen(g) + Chloride(g) → Hydrogen chloride(g)

(d) Magnesium(s) + Hydrochloric acid(aq) → Magnesium chloride(aq) + Hydrogen(g)

Answer:

a) 2KBr(aq) + Bal2(aq) → 2Kl(aq) + BaBr2(s)

Type: Double Displacement Reaction

(b) ZnCO3(s) → ZnO(s) + CO2(g)

Type: Decomposition Reaction

(c) H2(g) + Cl2(g) → 2HCl(g)

Type: Combination Reaction

(d) Mg(s) + 2HCl(aq) → MgCl2(aq) + H2(g)

Type: Displacement Reaction

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