A cyclohexane (c-hex) solution is prepared by fully dissolving 9.11g of a newly synthesized organic compound...
A cyclohexane (c-hex) solution is prepared by fully dissolving 9.11g of a newly synthesized organic compound in 100.g cyclohexane. The freezing point of the solution is depressed by -5.80 oC from the normal freezing point of 6.55 oC for pure cyclohexane ( Kf,c-hex= 20.0 oC kg/mol , MWc-hex = 84.0 g/mol).
(a) What is the molecular weight (molar mass) of the organic compound?
(b) What is the vapor pressure of the cyclohexane for this solution at 298K?
Homework Answers
Answer:-
This question is solved by using the simple concept of calculation of depression in freezing point and lowering of vapor pressure.
The answer is given in the image,
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A cyclohexane (c-hex) solution is prepared by fully dissolving
9.11g of a newly synthesized organic compound...
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If you can please explain step by step for each question. Problem 1, Question 1. Cyclohexae,...
If you can please explain step by step for each question.
Problem 1, Question 1.
Cyclohexae, C6H12, melts at 6.55 oC and has a freezing point
depression constant of kfp = -20.0 oC/m (where m
is molality). You want to determine the molar mass of an unknown
pure compound using the colligative property of freezing point
depression. You weigh out 83.561 g of cyclohexane, and confirm that
its melting point is 6.55 oC. You then mix 2.566 g of your...
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Cyclohexane has a freezing point of 6.50 °C and a Kf of 20.0 °C/m. What is...
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Molar Mass of a Solute The freezing point of cyclohexane is 6.50°C. For cyclohexane solvent Kf=20.0....
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If you can please explain step by step for each question.
Problem 1, Question 1.
Cyclohexae, C6H12, melts at 6.55 oC and has a freezing point
depression constant of kfp = -20.0 oC/m (where m
is molality). You want to determine the molar mass of an unknown
pure compound using the colligative property of freezing point
depression. You weigh out 83.561 g of cyclohexane, and confirm that
its melting point is 6.55 oC. You then mix 2.566 g of your...
Cyclohexane has a freezing point of 6.50 °C and a Kf of 20.0 °C/m. What is the freezing point of a solution made by dissolving 0.694g of biphenyl (C12H10) in 25.0 g of cyclohexane? 3)
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