When the stopper is removed from a partially filled bottle containing solid and liquid acetic acid at 16.7°C a strong vinegar like odor is noticeable immediately how many acidic acid phases must be present in the bottle explain

Answer 1

There must be two phases of acetic acid present in the bottle: a liquid phase and a gas phase.

When the stopper is removed and the bottle is exposed to air, the liquid acetic acid will begin to evaporate and form a gas phase. This gas phase is what gives off the strong vinegar-like odor. Therefore, both the liquid and gas phases of acetic acid must be present in order for the odor to be noticeable immediately.