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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). |
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Answer» (a) 2KBr + BaI2 ⇾ 2KI + BaBr2 In this reaction, both the reactants exchanges ions for two new products, hence it is a double displacement reaction, (b) ZnCO3(s) ⇾ ZnO(s) + CO2(g) In this reaction, a single substance yields two different products. Hence, it is a decomposition reaction. (c) H2(g) + Cl2(g) ⇾ 2HCl(g) In this reaction, two different reactants react with each other to form a single product. Hence, it is a combination reaction. (d) Mg(s) + 2HCl (aq.) ⇾ MgCl2(aq.) + H2(g) In this reaction, more reactive Mg is replacing less reactive H. Hence, it is a displacement reaction. a) 2KBr + BaI2 → 2KI + BaBr2 b) ZnCO3 → ZnO + CO2 c) H2 + Cl2 → 2HCl d) Mg + 2HCl → MgCl2 + H2 |
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