1) 5 fe2+ + mno4- + 8 h+ yields 5 fe3+ + mn2+ + 4 h2o
in the equation above
a) h+ ions are reduced
b) fe2+ ions are oxidized
c) h+ is the oxidizing agent
d) mno4- is the reducing agent
2) what element is oxidized in the following reaction?
hno3 + cu yields cu(no3)2 + no2 + h2o
a) h
b) n
c) o
d) cu
3) what change would not result in a shift of the equilibrium position to the left?
2 a (g) + b (s) two arrows stacked on top of each other. the top arrow points to the right. the bottom arrow points to the left. 3 c (g) + energy
a) increasing the pressure
b) adding more of gas c to the system
c) removing some of a from the system
d) cooling the system
4) which of the following reactions is not an example of an oxidation-reduction reaction?
a) 3br2 + 2ga yields 2gabr3
b) h2s + cl2 yields 2hcl + s
c) 2pbs + 3o2 yields 2pbo + 2so2
d) k2cr2o7 + koh yields 2 k2cro4 + h2o