question_answer

Select (i) combination reaction, (ii) decomposition reaction and (iii) displacement reaction from the following chemical equations:

(i) \[ZnC{{O}_{3}}(s)\to ZnO(s)+C{{O}_{2}}(g)\]

(ii) \[Pb(s)+CuC{{l}_{2}}(aq)\to PbC{{l}_{2}}(aq)+Cu(s)\]

(iii) \[NaBr(aq)+AgN{{O}_{3}}(aq)\to AgBr(s)+NaN{{O}_{3}}(aq)\]

(iv) \[{{H}_{2}}(g)+C{{l}_{2}}(g)\to 2HCl(g)\]

(v) \[F{{e}_{2}}{{O}_{3}}+2Al\to A{{l}_{2}}{{O}_{3}}+2Fe\]

(vi) \[3{{H}_{2}}(g)+{{N}_{2}}(g)\to 2N{{H}_{3}}(g)\]

(vii) \[CaC{{O}_{3}}(s)\xrightarrow{Heat}CaO(s)+C{{O}_{2}}(g)\]

Answer:

(i) Decomposition reaction

(ii) Displacement reaction

(iii) Double displacement reaction

(iv) Combination reaction

(v) Displacement reaction

(vi) Combination reaction

(vii) Decomposition reaction