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Balance the following chemical equations and identify the type of chemical reaction.

(a) Mg(s) + Cl_2(g) \rightarrow MgCl_2(s)

(b) HgO(s) \rightarrow Hg(l) + O_2(g)

(c) Na(s) + S(s) \rightarrow Na_2S(s)

(d) TiCl_4 (l) + Mg(s) \rightarrow Ti(s) + MgCl_2(s)

(e) CaO(s) + SiO_2(s) \rightarrow CaSiO_3(s)

(f) H_2O_2 (l) \rightarrow H_2O(l) + O_2(g)

Answers (1)

(a)Mg(s) + Cl_2(g) \rightarrow MgCl_2(s)

This type of reaction is called a combination reaction or a synthesis reaction.

(b) 2HgO(s) \overset{heat}{\rightarrow} 2Hg(l) + O_2(g)

This is an example of thermal decomposition reaction.

(c) 2Na(s) + S(s) \rightarrow Na_2S(s)

This is an example of a Combination reaction.

(d) TiCl_4 (l) + Mg(s) \rightarrow Ti(s) + 2MgCl_2 (s)

This reaction falls under the category of Displacement reactions

(e) CaO(s) + SiO_2(s) \overset{UV}{\rightarrow} CaSiO_3(s)

This is a synthesis reaction.

(f) 2H_2O_2 (l) \rightarrow 2H_2O (l) + O_2 (g)

This is a decomposition reaction.

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