Which would have a bigger temperature change (evaporate slower), butane or butanol? and between pentanol and pentane? why?
- oeman50Lv 71 year agoFavorite Answer
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.
- Anonymous1 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.