11. During distillation, there are two reasons why the temperature will sometime
ID: 228491 • Letter: 1
Question
11. During distillation, there are two reasons why the temperature will sometimes go down rather than up. What are the two possible causes?12. Whe distillation first begins, which component of the mixture will be the greater component of the vapor phase vs. the liquid phase? Explain. 11. During distillation, there are two reasons why the temperature will sometimes go down rather than up. What are the two possible causes?
12. Whe distillation first begins, which component of the mixture will be the greater component of the vapor phase vs. the liquid phase? Explain.
12. Whe distillation first begins, which component of the mixture will be the greater component of the vapor phase vs. the liquid phase? Explain.
Explanation / Answer
11. During distillation, there are two reasons why the temperature will sometimes go down rather than up. What are the two possible causes?
Answer:
a) The heat is absorbed by the component of the mixture is used to raise internal energy, this will decreases temperature. One more thing is loss of heat energy to surroundings from glass apparatus to atmosphere.
b) During vaporization of components of the mixture heat energy is required (from liquid state to gaseous state is endothermic reaction and requires heat energy), this will decreases temperature.
c) The evaporated solvent vapors condenses on thermometer bulb, which inhibits the accurate temperature reading.
12. Whe distillation first begins, which component of the mixture will be the greater component of the vapor phase vs. the liquid phase? Explain.
Answer: Normally lower boiling point solvent will evaporate first and will be the greater component of the vapor phase vs. the liquid phase. It depends also the combination of solvents mixture,sometimes azeotropic mixtures (Azeotrope is a mixture of two or more liquids whose proportions cannot be altered by simple distillation. In simple words, the ratio in which two components are present in a mixture is same even in vapor phase.For example: If a mixture of ethanol and water is given as ethanol is 97% and water is 3% then in vapor phase also the ethanol is 97% and water is 3%.) exist between specific solvent mixture in that case.
Thank You So Much! Please Rate this answer as you wish.("Thumbs Up")
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.