Organic Chemsitry: Distillation Lab 1. Why does a solution containing a non-volatile component have a different...

Organic Chemsitry: Distillation Lab

1. Why does a solution containing a non-volatile component have a different temperature in the still-pot than at the still-head?

2.Why does a solution containing two volatile components have the same temperature in the still-pot and at the still head?

3. For a 24-mL sample of a two component mixture where A boils at 75 ^oC and B boils at 90 ^oC, what is true about the following four fractions (6 mL each) collected by simple distillation

a. Which component has a higher mole fraction in the first fraction?

b. Compare ratios of A and B in collections 2 and 3.

c. What is the major component left in the still-pot

14. What are the advantages and disadvantages of collecting 4 fractions by distillation versus 20 fractions?

15.Why does insulating the fractionating column improve the process of this type of distillation?

Solutions

Expert Solution

queen_honey_blossom answered 2 years ago

Next > < Previous

Related Solutions

a solution is made by mixing 1.08 g of an unknown non-volatile non-electrolyte with 10.0 g...

a solution is made by mixing 1.08 g of an unknown non-volatile non-electrolyte with 10.0 g of benzene. The freezing point of pure benzene is is 5.5 degrees Celsius. The molal freezing point depression constant, Kf, for benzene is 5.12 degrees Celsius per molale. What is the value of the freezing point depression? What is the molality of the solution? What is the molar mass of the unknown?

Distillation post lab: 1-why was the temperature of the heater probe so much higher than the...

Distillation post lab: 1-why was the temperature of the heater probe so much higher than the distillation temperature? 2-what is the same comparing separation by distillation to separation by TLC? 3-even if you heated the boiling flask until it was dry, not all the highest boiling compounds will be condensed and collected. why? 4-describe 2 ways in which the distillation set up could break and describe how to avoid that.

An organic chemistry post-lab question from a steam distillation of (+)-Limonene from orange peels using water....

An organic chemistry post-lab question from a steam distillation of (+)-Limonene from orange peels using water. A.) Could you have performed this experiment using hexane instead of water? B.) What would end up being different and what would you have to do differently?

QUESTION 1 Distillation is commonly used in the organic laboratory as a way to: a. remove...

QUESTION 1 Distillation is commonly used in the organic laboratory as a way to: a. remove a reaction solvent. b. purify an organic liquid. c. separate the components of a liquid mixture. d. all of the above. 1 points QUESTION 2 Fractional distillation gives a better separation than simple distillation because _________. a. the fractionating column used in fractional distillation contains more theoretical plates. b. the fractionating column used in fractional distillation contains less theoretical plates. c. does not...

1. Why might you use a separatory funnel in an Organic Chemistry lab? What is the...

1. Why might you use a separatory funnel in an Organic Chemistry lab? What is the appropriate way to use one? 2. In an acid-base reaction, what major mechanism is being carried out?

1) what class of organic compunds does the carbon-containing reactant in the reaction above belong to...

1) what class of organic compunds does the carbon-containing reactant in the reaction above belong to CH3+CH2+CH2+(C=O) +CH3 +H2 arrows both ways H+? There is a bond in between C and O I put it in brackets and there is a bond between C and CH3? 2) Give the IUPAC name for carbon-containing reactant in the reaction above? 3) Give the product of this reduction/hydrogenation reaction. What is IUPAC name of the product? Explain why aldehyde like ethanol and paropanol...

This is Organic Chemistry Lab, Solvent Extraction. 1. What are the criteria for solubility of organic...

This is Organic Chemistry Lab, Solvent Extraction. 1. What are the criteria for solubility of organic molecules in water? 2. If methylene chloride was used as the organic solvent in solvent extraction, instead of ether, what would the top layer be in the separation step? 3. What formula was used to calculate interaction of organic compounds with the stationary phase? 4. In the given mixture (liquid-liquid), which compound (be specific) has the weakest interaction with the stationary phase? Why?

16.636 g of a non-volatile solute is dissolved in 410.0 g of water. The solute does...

16.636 g of a non-volatile solute is dissolved in 410.0 g of water. The solute does not react with water nor dissociate in solution. Assume that the resulting solution displays ideal Raoult's law behaviour. At 90°C the vapour pressure of the solution is 517.01 torr. The vapour pressure of pure water at 90°C is 525.80 torr. The molar mass of the solute is 43.0 g/mol. Now suppose, instead, that 16.636 g of a volatile solute is dissolved in 410.0 g of...

9.537 g of a non-volatile solute is dissolved in 220.0 g of water. The solute does...

9.537 g of a non-volatile solute is dissolved in 220.0 g of water. The solute does not react with water nor dissociate in solution. Assume that the resulting solution displays ideal Raoult's law behaviour. At 25°C the vapour pressure of the solution is 23.498 torr. The vapour pressure of pure water at 25°C is 23.756 torr. Calculate the molar mass of the solute (g/mol). 71.1 g/mol Now suppose, instead, that 9.537 g of a volatile solute is dissolved in 220.0...

What is the freezing point for a solution containing 1.00 mole of NaCl (an ionic component)...

What is the freezing point for a solution containing 1.00 mole of NaCl (an ionic component) dissolved in 1.00 kg of water?

Subjects