Question

Write structural formula(condensed) for all the primary , secondary and tertiary haloalkanes with formula of C4H9Br and all the carboxylic acids and esters with molecular formula C4H8O2 and also all secondary alcohols with molecular formula C5H120?

Answer 1

See the condensed structural formulas below.

Explanation:

There are four isomeric haloalkanes with molecular formula `"C"_4"H"_9"Br"`.

• The primary bromides are 1-bromobutane, `"CH"_3"CH"_2"CH"_2"CH"_2"Br"`, and 1-bromo-2-methylpropane, `("CH"_3)_2"CHCH"_2"Br"`.
• The secondary bromide is 2-bromobutane, `"CH"_3"CH"_2"CHBrCH"_3`.
• The tertiary bromide is 2-bromo-2-methylpropane, `("CH"_3)_3"CBr"`.

The two isomeric carboxylic acids with molecular formula `"C"_4"H"_8"O"_2` are

• butanoic acid, `"CH"_3"CH"_2"CH"_2"COOH"`
• 2-methylpropanoic acid, `("CH"_3)_2"CHCOOH"`

The four isomeric esters with molecular formula `"C"_4"H"_8"O"_2` are

• methyl propanoate, `"CH"_3"CH"_2"COOCH"_3`
• ethyl ethanoate, `"CH"_3"COOCH"_2"CH"_3`
• propyl methanoate, `"HCOOCH"_2"CH"_2"CH"_3`
• 1-methylethyl methanoate, `"HCOOCH(CH"_3)_2`

The three secondary alcohols with molecular formula `"C"_5"H"_12"O"` are

• pentan-2-ol, `"CH"_3"CH"_2"CH"_2"CHOHCH"_3`
• pentan-3-ol, `"CH"_3"CH"_2"CHOHCH"_2"CH"_3`
• 3-methylbutan-2-ol, `("CH"_3)_2"CHCHOHCH"_3`