Flashcards on Distillation of an ethanol-water mixture
Distillation of an Ethanol-Water Mixture: A Student Guide
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Ethanol-Water Distillation
45 cards
Card 1
Question: What is the primary principle behind separating components in a liquid mixture using distillation?
Answer: Distillation exploits differences in the volatility of components in a liquid mixture.
Card 2
Question: How does distillation allow for the concentration of ethanol from an ethanol-water mixture?
Answer: Ethanol is more volatile than water, so distillation allows for its concentration.
Card 3
Question: What fundamental process occurs when a liquid mixture is heated during distillation?
Answer: Heating a liquid mixture produces a vapor, which is then cooled and condensed back into a liquid.
Card 4
Question: Why does the vapor phase become richer in one component during distillation if the components have different boiling points?
Answer: If components have different boiling points, the vapor phase will be richer in the more volatile component (the one with the lower boiling point).
Card 5
Question: Are ethanol and water miscible?
Answer: Yes, ethanol and water are miscible in all proportions.
Card 6
Question: What is the approximate boiling point of pure ethanol at standard atmospheric pressure?
Answer: Pure ethanol has a boiling point of approximately 78.37 °C at standard atmospheric pressure (101.3 kPa).
Card 7
Question: What is the boiling point of pure water?
Answer: Pure water boils at 100.0 °C.
Card 8
Question: What is Raoult's Law?
Answer: Raoult's Law states that the partial vapor pressure of a component in an ideal solution is equal to the vapor pressure of the pure component multiplie
Card 9
Question: How is the partial vapor pressure of component A (P_A) calculated according to Raoult's Law?
Answer: P_A = x_A · P°_A, where x_A is the mole fraction of component A in the liquid phase and P°_A is the vapor pressure of pure component A at the given te
Card 10
Question: Do ethanol-water mixtures behave as ideal solutions according to Raoult's Law?
Answer: No, ethanol-water mixtures are not ideal solutions; they exhibit positive deviations from Raoult's Law.