HydrocarbonshardMCQ SINGLE⭐ Must-Do

Among the isomeric pentanes (), which isomer exhibits the lowest boiling point, and what is its physHydrocarbons Chemistry Question

Question

Among the isomeric pentanes ($C_5H_{12}$), which isomer exhibits the lowest boiling point, and what is its physical state at 298 K?

Answer: A

💡 Solution & Explanation

Neopentane (2,2-dimethylpropane) is highly branched and nearly spherical, giving it the weakest van der Waals forces. It has the lowest boiling point ($9.5^\circ C$) and is a gas at room temp.

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