Draw the expanded structural formula for 3-ethylpentane; 3-ethyl -2-methylheptane; 4-ethyl-2,2-dimethyloctane; and 2-bromopropane.
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Answer – There are given IUPAC names for the compounds and need to draw the expanded structure for each given name.
3-ethylpentane - We know the parent alkane is pentane and on the carbon number 3 there is ethyl as substituent.
3-ethyl -2-methylheptane - We know the parent alkane is heptane and on the carbon number 3 there is ethyl as substituent and on the carbon number 2 there is methyl as substituent.
4-ethyl-2,2-dimethyloctane - We know the parent alkane is octane and on the carbon number 2,2 there are two methyl and on the 4 there is ethyl as substituent.
2-bromopropane - We know the parent alkane is propane and on the carbon number 2 there is bromine as substituent.
Following are the structure for each given name-
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