Problems

Author: John Hutchinson

Problem 1	Compounds with formulae of the form CnH2n+2 are often referred to as "saturated" hydrocarbons. Using Lewis structures, explain how and in what sense these molecules are "saturated."
Problem 2	Molecules with formulae of the form CnH2n+1 (e.g. CH3, C2H5) are called "radicals" and are extremely reactive. Using Lewis structures, explain the reactivity of these molecules.
Problem 3	State and explain the experimental evidence and reasoning which shows that multiple bonds are stronger and shorter than single bonds.
Problem 4	Compare N2 to H4N2. Predict which bond is stronger and explain why.
Problem 5	Explain why the two Lewis structures for Freon 114, shown in figure 12, are identical. Draw a Lewis structures for an isomer of Freon 114, that is, another molecule with the same molecular formula as Freon 114 but a different structural formula.