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

Answer 1

(a) 2KBr(aq) + BaI2(aq) $→$ 2KI(aq) + BaBr2(s); Double displacement reaction
(b) ZnCO3(s) $→$ ZnO(s) + CO2(g); Decomposition reaction
(c) H2(g) + Cl2(g) $→$ 2HCl(g); Combination reaction
(d) Mg(s) + 2HCl(aq) → MgCl2(aq) + H2(g); Displacement reaction