The graphic symbol for CH3OH is—-
H
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H-C-OH;
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H
for C2H5OH it is—
H H
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H-C-C-OH.
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H H
Write it for the next two.
300. Ethers.—Another interesting class of compounds are the oxides of the marsh-gas series. In this series, O replaces H. CH3H becomes (CH3)2O, and C2H5H becomes (C2H5)2O. Why is a double radical taken? These oxides are ethers, common or sulphuric ether being (C2H5)2O. Complete this table, by substituting O in place of H, in the table on page 176.
1. (CH3)2O, methyl oxide, or methyl ether. 2. (C2H5)2O, ethyl oxide, or ethyl ether. 3. ? ? ? 4. ? ? ? 5, etc. ? ? ?
Graphically represented the first two are:—
H H H H H H
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(1) H-C-O-C-H. (2) H-C-C-O-C-C-H.
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H H H H H H
301. Substitutions.—A large number of other substitutions can be made in each symbol, thus giving rise to as many different compounds.