7 1 2
Phenols—
Mono, Di
and
trihydric
phenols
Ethers are classified as simple or symmetrical, if the alkyl or aryl
groups attached to the oxygen atom are the same, and mixed or
unsymmetrical, if the two groups are different Diethyl ether,
C2H5OC2H5, is a symmetrical ether whereas C2H5OCH3 and C2H5OC6H5
are unsymmetrical ethers