Which of the following can form intermolecular $\mathrm{H}$-bond?
Which of the following can form intermolecular $\mathrm{H}$-bond?
Ethyl acetate
Methyl formate
Acetamide
Acetic anhydride
Solution
The hydrogen bonded network occurs in amorphous acetamide between $\mathrm{C}=\mathrm{O}$ and $\mathrm{N}-\mathrm{H}$ groups. Two H-bonds per molecule are found in average.
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\text { Thus, the correct option is (3). }
$
