1
October 3, 2003
Review and Problem set for Exam 1
I. Concentration Units. Explain how you would prepare 200 mL of 0.1M solution of Na2SO4. The molecular
weight of Na2SO4 is 142 g/mol
Need 0.1 moles Na2SO4 per 1L solution, or 0.05 moles per 200 mL.
Since the molar mass is 142 g/mol, 0.05 moles is 2.84 g. So, weight 2.84 g of Na2SO4, transfer to a measuring
cylinder, and add water to make up the total volume of 200 mL.
II Nomenclature of Organic Compounds. Give the IUPAC names for each of the following compounds:
a)
CHCH3
CH3
CH3
1-Isopropyl-2-methylcyclohexane
b)
CH3CH2CHCH3
CH CH2
3-Methyl-1-pentene
c)
CH3
NO2
NO2
O2N
2,4,6-Trinitrotoluene
