DQuestion 3 20 pts What are the applications of simple distillation and fraction

Question

DQuestion 3 20 pts What are the applications of simple distillation and fractional distillation O 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 micture Simple distillation is preferred when a higher percent recovery of pure material is desired. O Fractional distillation is preferred when a higher percent recovery of pure material is desired. O Simple distillation must be done if the compound has a high boiline point. Whereas fractional distillation s design for low boing point compounds Question 4 When plotting distillation temperature verses volume of distillate, the plots are only slightly different. O True 20 pts False Question 5 20 pts Explain why the cooking directions that appear on a bag of rice indicate different directions based on altitude O More water is needed and the rice must cook loneer because the water boils at a lower temperature at higher elevation, due to the decrease in atmospheric pressure. Less waters needed and the rice must cook shorter because the water oils at a hieher temperature at hi er ele ation due to the increase in atmospheric pressure

Explanation / Answer

Question 3: Fractional distillation is preferred when a high percent recovery of pure material is desired. In fractional distillation, a fractionating collumn is used which separates out each component efficiently.

Question 5: More water is needed at higher elevation and longer cooking time is required since water boils at lower temperature. At higher altitude, the boiling point of water decreases and therefore, more heat is needed to be supplied to food for cooking, so more water and longer time is required.

[One question can be answered according to CHegg policy. Here 2 are answered]

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