Q1: If the amount of the steam used in steam distillation is increased, the temperature of distillation

ANS:B - decreases

the amount of steam used in steam distillation would actually cause the temperature of distillation to decrease, not remain unchanged. Here's why: In steam distillation, the temperature of distillation is determined by the boiling point of the mixture of water and the compound(s) being distilled. When steam is introduced into the system, it condenses on the surface of the liquid mixture and releases heat. This heat is absorbed by the liquid mixture, causing it to heat up and eventually reach its boiling point. However, as more steam is introduced into the system, the temperature of the mixture is effectively lowered because the steam itself is at a lower temperature compared to the boiling point of the mixture. This phenomenon is known as evaporative cooling. The additional steam provides more cooling effect, which offsets the heating effect of the steam condensing on the liquid mixture. As a result, increasing the amount of steam used in steam distillation would decrease the temperature of distillation, making it easier to separate the desired volatile compounds from the mixture.