Unit 2 Types of Chemical Reactions Problem Set

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

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 Types of Chemical Reactions Problem Set

d. ___Ni(s) + ___HCl(aq)

e. ___Mn(s) + ___CoCl2(aq)