Question

which of the following molecules contains only single bonds? a ch₃cooh b c₂h₆ c c₆h₆ d hcn

Explanation:

• For \(CH_3COOH\) (acetic acid):
• The structure has a \(C = O\) double bond in the carboxyl group (\(-COOH\)).
• For \(C_2H_6\) (ethane):
• Its structure is \(H_3C - CH_3\), with only \(C - C\) and \(C - H\) single bonds.
• For \(C_6H_6\) (benzene):
• It has a ring structure with alternating double and single bonds (or a delocalized pi - system which implies non - single bond character).
• For \(HCN\) (hydrogen cyanide):
• The structure is \(H - C\equiv N\), which contains a triple bond.

Answer:

B. \(C_2H_6\)