Unit 2
Types of Chemical Reactions
4. Determine the oxidation numbers on each atom.
a.
CO2
b. CO
c. SO3
d. Ca2+
e. O3
f. BF3
g. PbCl2
h. H2SO4
i.
HCO3-
j. N2O5
Problem Set
Unit 2
Types of Chemical Reactions
Problem Set
5. Identify the element that is oxidized and the element that is reduced in each reaction. Justify your
answers by identifying the elements that gained and lost electrons.
a. 2AgNO3(aq) + Cu(s)  Cu(NO3)2(aq) + Ag(s)
b. Ca(s) + Cl2(g)  CaCl2(s)
c. CuO(s) + H2(g)  Cu(s) + H2O(l)
d. Cu(s) + 4HNO3(aq)  Cu(NO3)2 + 2NO2(s) + 2H2O(l)
e. 3MnO(s) + 4Al(s)  3Mn(s) + 2Al2O3(s)
6. Complete the following equations by writing a balanced molecular equation and then a net ionic
equations
a. ___MgO(s) + ___H2(g) 
b. ___Cu(s) + ___AgNO3(aq) 
c. ___Cl2(g) + ___KBr(aq) 
Unit 2
d. ___Ni(s) + ___HCl(aq) 
e. ___Mn(s) + ___CoCl2(aq) 
Types of Chemical Reactions
Problem Set