Homework Answers
In the distillation a pure substance ,as the boiling point is reached though there is some energy for some molecules to undergo phase change from liquid to gas but there remains certain molecules which does not have enough energy to undergo vapourization to gas and thus extra heat energy is needed which is called heat of vapourization to be added to system to vapourize all the water at once.
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6. In the distillation of a pure substance (e.g., water), why does all of the water...
m m Liege Ammerman Campus. Department of Physical Science 2. During a fractional distillation, why is...
m m Liege Ammerman Campus. Department of Physical Science 2. During a fractional distillation, why is a better separation achieved when heat mation, why is a better separation achieved when heat is applied slowly and steadily? (2 pts) 3. Con Consider heating a pure substance, such as acetone, to its boiling point. Why doesn't all the acetone vaporize instantly when the boiling point is reached? Hint: think about the heat of vaporization. (1 pt) 4. Why is it preferable to...
What are the applications of simple and fractional distillation A)Simple distillation is used when a substance...
What are the applications of simple and fractional distillation A)Simple distillation is used when a substance is less than 10% impure while fractional distillation is used to purify a compound when the impurities are greater than 10% of the mixture. B) Simple distillation is preferred when a higher percent recovery of pure material is desired. C) Fractional distillation is preferred when a higher percent recovery of pure material is desired. D) Simple distillation must be done if the compound has...
Why does water have a higher boiling point than ethanol? How does this property allow distillation...
Why does water have a higher boiling point than ethanol? How does this property allow distillation to work? 1 paragraph please
Why does fractional distillation result in more pure products but lower yields? Can simple or fractional...
Why does fractional distillation result in more pure products but lower yields? Can simple or fractional distillation result in distillation of pure ethanol? Explain.
Why the Boiling point of the aqueous Methanol in a fractional distillation is higher than the...
Why the Boiling point of the aqueous Methanol in a fractional distillation is higher than the boling point of the pure Methanol
Explain why the boiling point of a two-component mixture rises slowly throughout a simple distillation when...
Explain why the boiling point of a two-component mixture rises slowly throughout a simple distillation when the boiling-point differences or not large
Distillation 11 4. The organic liaud in Sicam distillatior vaporites at: a) Lower temperature than its...
Distillation 11 4. The organic liaud in Sicam distillatior vaporites at: a) Lower temperature than its boiling point b) Higher temperature than its boiling point c) At its boiling point d) None of the mentioned 2. In steam distillation, the liquid boils when th allation, the liquid boils when the sum of the organic liquid vapor pressure and the water vapor pressure is: a) Greater than atmospheric pressure b) Lesser than atmospheric pressure Equals to atmospheric pressure d) None of...
1) a student obtained a boiling point of 82.5 C during the simple distillation of an...
1) a student obtained a boiling point of 82.5 C during the simple distillation of an unknown alcohol. However, when a solution of same alcohol and water was distilled, the boiling point obtained was 80 C, give all possible reasons.
Assemble the glassware for fractional distillation according to the diagram and discussion above. Make certain that...
Assemble the glassware for fractional distillation according to the diagram and discussion above. Make certain that all joints are secure and that the apparatus is appropriately supported. Remember to allow for space below the distillation flask for the heating mantle and below the receiving flask for an ice bath. Pay extra attention to the positioning of the bulb of the thermometer as mentioned in the introduction. It is critical that the thermometer be positioned correctly for accurate temperature measurement. Using...
6. Sketch a properly-labeled plot of isobaric molar entropy vs. temperature for a typical pure substance X that exi...
6. Sketch a properly-labeled plot of isobaric molar entropy vs. temperature for a typical pure substance X that exists as solid B below 100. K, solid a above 100. K, and has a melting point of 300. K and a boiling point of 400. K. Assume substance X has no residual entropy. 7. Calculate the standard molar entropy of fusion of substance X in the previous question if the standard enthalpies of formation of solid and liquid X are 147...
m m Liege Ammerman Campus. Department of Physical Science 2. During a fractional distillation, why is a better separation achieved when heat mation, why is a better separation achieved when heat is applied slowly and steadily? (2 pts) 3. Con Consider heating a pure substance, such as acetone, to its boiling point. Why doesn't all the acetone vaporize instantly when the boiling point is reached? Hint: think about the heat of vaporization. (1 pt) 4. Why is it preferable to...
Distillation 11 4. The organic liaud in Sicam distillatior vaporites at: a) Lower temperature than its boiling point b) Higher temperature than its boiling point c) At its boiling point d) None of the mentioned 2. In steam distillation, the liquid boils when th allation, the liquid boils when the sum of the organic liquid vapor pressure and the water vapor pressure is: a) Greater than atmospheric pressure b) Lesser than atmospheric pressure Equals to atmospheric pressure d) None of...
6. Sketch a properly-labeled plot of isobaric molar entropy vs. temperature for a typical pure substance X that exists as solid B below 100. K, solid a above 100. K, and has a melting point of 300. K and a boiling point of 400. K. Assume substance X has no residual entropy. 7. Calculate the standard molar entropy of fusion of substance X in the previous question if the standard enthalpies of formation of solid and liquid X are 147...
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