Question

arrange the three isomers of alkane with molecular formula C5 S12 in increasing order of boiling points and write their IUPAC name​

Answer 1

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Answer 2

Isomers of alkane with molecular formula of C5H12 in order of thwir b.p is pentane>2 methyl butane>2,2dimethyl propane .IUPAC name is as follow:----

The three isomers of C5H12 are--

1) normal pentane with formula of CH3CH2CH2CH2CH3

2)2 methyl butane with formula of CH3CH2(CH3)CH2CH3

3)2,2 dimethyl propane with formula of CH3C(CH3)(CH3)CH3

Isomers are those with same molecular formula but different arrangement of atoms since the carbon chains are different hence these are chain isomers.

◆We know that boiling point of isomers is inersely propotional to branching as the branching of compound increases its boiling pointdecreases due to weaker vanderwall dispersion forces in branch organic molecule compared to straight ones

◆so bp order is normal pentane>2 methyl butane>2,2dimethyl propane.