Dr. Andrea Berlich
Chemistry for Physicists
WS 2010/2011
Exercises Part 10
1. Determine the bond order in NO using MO theory.
2. Make a table oxidation number / example and insert the following
compounds/ions according to their oxidation number: N2, N2H4, NH3,
NO, HNO3, N2O5, N2O4, NO2, N2O, HNO2, NO+, NO2+, N2O3, N3-. Give
the names of the compounds/ions.
3. Write names for the following compounds: H3PO4, H3PO3, KH2PO4,
MgHPO4, Na2HPO3, NaH2PO2, P4O10, PCl5.
4. Write down the formula of the following compounds: Sodium thiosulphate, sulphurous acid, potassium sulphate, potassium hydrogen
sulphate, dihydrogen sulphide, copper(I) sulphide, copper(II) sulphide, sodium dithionate.
5. Give the definition of a redox ampholyte and explain it by reaction
equations using SO2 or H2O2.
6. Give the reaction of the Claus process. What special type of reaction
is it?
7. Compare the acid strength of HClO, HClO2, HClO3, and HClO4 and
give a reason for your decision.
8. Balance the oxidation of HSO3- with potassium permanganate to dithionate in an acidic environment.
9. Give Lewis structures of the following compounds/ions:
a. NO
b. N2O5
c. HNO3
d. SO2
e. S2O32f. HClO3
g. N2O