Which would have a bigger temperature change (evaporate slower), butane or butanol? and between pentanol and pentane? why?

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  • 1 year ago
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    At any given temperature the pure hydrocarbons, butane and pentane have higher vapor pressures than the alcohols, butanol and pentanol. The OH on the alcohols causes polarity in the molecules and increases the inter-molecular forces. This means the alcohols evaporate slower.

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  • Anonymous
    1 year ago

    Butane. The butane liquid is often in canisters under pressure to prevent it evaporating too fast. As soon as the pressure is relieved it turns to gas and the canister freezes on the outside, the temperature is below freezing point of water. Butanol evaporates slowly and doesn't change temperature much.

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