Activity Series: Li > K > Ba > Ca > Na > Mg > Al > Zn > Fe > Ni> Sn > Pb >H> Cu

Question

Activity Series: Li > K > Ba > Ca > Na > Mg > Al > Zn > Fe > Ni> Sn > Pb >H> Cu > Ag > Au Identify the type of reaction, write the products with phases, and balance. a) 2Mg(s) + O_2(g) rightarrow 2MgO (s) b) Na (s) + Cl_2(g) rightarrow NaCl (s) c) PbCO_3 (s) rightarrow PbO (s) + CO_2 (g) d) CH_4 (g) + 20_2 (g) rightarrow CO_2 (g) + 2H_2O (g) e) C_2H_2OH (1) + O_2 (g) rightarrow f) Fe (s)** CuSO_4 (aq) rightarrow **Iron will form a +2 cation g) Ag (s) = HCI (aq) rightarrow

Explanation / Answer

Reaction (a) is already balanced and is a synthesis ( or combination ) reaction.

(b)

2Na (s) + Cl2 (g) ---> 2 NaCl (s)

This is also a combination reaction.

Reaction (c) is already balanced and is a decomposition reaction.

Reaction (d) is already balanced and is a combustion reaction.

(e)

C2H5OH (l) + 3O2 (g) ----> 2CO2 (g) + 3H2O (l)

This is a combustion reaction

(f)

Fe (s) + CuSO4 (aq) ----> FeSO4 + Cu (s)

This is a single displacement reaction

(g)

2Ag (s) + 2HCl (aq) ----> 2AgCl(s) + H2 (g)

This is also a displacement reaction.

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