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(D) The molecular formula $C_5H_{12}O$ corresponds to a saturated alcohol with the general formula $C_nH_{2n+1}OH$.To find the number of structural is

Vedclass · Accepted Answer

$8$

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(D) The molecular formula $C_5H_{12}O$ corresponds to a saturated alcohol with the general formula $C_nH_{2n+1}OH$.To find the number of structural isomers,we determine the possible carbon skeletons for a pentyl group $(-C_5H_{11})$:$1$. $CH_3-CH_2-CH_2-CH_2-CH_2-OH$ (pentan$-1-$ol)$2$. $CH_3-CH_2-CH_2-CH(OH)-CH_3$ (pentan$-2-$ol)$3$. $CH_3-CH_2-CH(OH)-CH_2-CH_3$ (pentan$-3-$ol)$4$. $(CH_3)_2CH-CH_2-CH_2-OH$ ($3$-methylbutan$-1-$ol)$5$. $(CH_3)_2CH-CH(OH)-CH_3$ ($3$-methylbutan$-2-$ol)$6$. $CH_3-CH_2-CH(CH_3)-CH_2-OH$ ($2$-methylbutan$-1-$ol)$7$. $CH_3-C(OH)(CH_3)-CH_2-CH_3$ ($2$-methylbutan$-2-$ol)$8$. $(CH_3)_3C-CH_2-OH$ ($2$,$2$-dimethylpropan$-1-$ol)Thus,there are $8$ possible structural isomers.

How many structural isomers of alcohols are possible with the molecular formula $C_5H_{12}O$ (ignoring stereoisomers)?

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