Solutions1850-1860
1. The Williamson synthesis
Write the reaction of potassium ethoxide with methyl iodide. What type of compound is obtained?
CH3CH2O− K+ + CH3I → CH3CH2–O–CH3 + KI
An ether (ethyl methyl ether) is obtained by substitution of the iodine.
2. Valences
How many bonds do carbon, nitrogen, oxygen, hydrogen and chlorine usually form? Use this to write the expanded formula of ethyl chloride, CH3CH2Cl.
C: 4; N: 3; O: 2; H: 1; Cl: 1. In ethyl chloride each carbon forms four bonds: H3C–CH2–Cl, with three hydrogens on the first carbon and two hydrogens and the chlorine on the second.