Practice Problem Answers

Back to Single Replacement

Write correct formulas for the products in these single replacement reactions.

Unbalanced Answers

1) Al + Pb(NO3)2 ---> Pb + Al(NO3)3

2) Cl2 + NaI ---> I2 + NaCl

3) Fe + AgC2H3O2 ---> Ag + Fe(C2H3O2)2
If Fe(III) is used, then Fe(C2H3O2)3 would result.

4) Al + CuCl2 ---> Cu + AlCl3

5) Br2 + CaI2 ---> I2 + CaBr2

6) Al + HCl ---> AlCl3 + H2

7) Mg + HCl ---> MgCl2 + H2

8) Zn + H2SO4 ---> ZnSO4 + H2

9) Fe + CuSO4 ---> Cu + FeSO4
If Fe(III) is used, then Fe2(SO4)3 would result.

10) Cl2 + MgI2 ---> I2 + MgCl2


Here are examples of the +1 and +2 cations reacting with water:

Na + H2O ---> NaOH + H2

Li + H2O ---> LiOH + H2

Cs + H2O ---> CsOH + H2

Mg + H2O ---> Mg(OH)2 + H2

Ca + H2O ---> Ca(OH)2 + H2

Ba + H2O ---> Ba(OH)2 + H2