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.
Homework Answers
This is because of Positive deviation from Raoult's law.
Initially, when only alcohol (say A) was present there were only A-A interactions. Thus, it boils at normal boiling point.
While, on adding water (say B) there exists A-B interactions as well .since, A-B interactions are weaker than A-A interactions, hence, alcohol prefer to go into vapour state. thereby, increasing the vapour pressure and decreasing the boiling point.
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1) a student obtained a boiling point of 82.5 C during the
simple distillation of an...
1. A student carried out a simple distillation on a compound known to boil at 124°C...
1. A student carried out a simple distillation on a compound known to boil at 124°C and reported an observed boiling point of 116°-117°C. TLC comparison of the product showed that the compound was pure, and a calibration of the thermometer indicated that it was accurate. What procedural error might the student have made in setting up the distillation apparatus? 2. Which method is better for purifying a mixture of two liquids that boil at nearly the same temperature: simple...
A student performed a simple distillation in an attempt to separate the two components of a...
A student performed a simple distillation in an attempt to
separate the two components of a 50/50 solution of hexane and
toluene. While doing so, the student recorded the temperature of
the vapors as the distillation proceeded. The data is included
below. Using the provided data, make a graph of temperature of the
vapors versus the volume of distillate collected.
Distillation data Volume (mL) Temp (deg C) 0.05 74 74 2 75 3 76 4 78 5 79 6 80...
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
(b) Estimate the boiling points (b.p.) of compound C (lower boiling) and compound D (higher...
(b) Estimate the boiling points
(b.p.) of compound C (lower boiling) and compound D (higher
boiling)?
Compound C b.p.
°C Compound D b.p.
°C
A mixture of two compounds was distilled by simple and fractional distillation, with compound C being the lower boiling compound and compound D being the higher boiling compound. Graphs of temperature versus volume of distillate collected are rovided for Distillation 1 and Distillation 2 80 75 O 70 2 65 60 2 55...
The boiling point of water is 100.00 °C at 1 atmosphere. A student dissolves 10.58 grams...
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Questions about distillation: Titration Data - Fractional Distillation -Simple Distillation - Temperature (Celsius) -- -- ---...
Questions about distillation:
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The boiling point of water is 100.00 °C at 1 atmosphere. A student dissolves 13.51 grams...
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The boiling point of water is 100.00 °C at 1 atmosphere. A student dissolves 11.03 grams...
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35. In a distillation set up a) Cold water flows into the condenser from the elevated...
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1. A student carried out a simple distillation on a compound known to boil at 124°C and reported an observed boiling point of 116°-117°C. TLC comparison of the product showed that the compound was pure, and a calibration of the thermometer indicated that it was accurate. What procedural error might the student have made in setting up the distillation apparatus? 2. Which method is better for purifying a mixture of two liquids that boil at nearly the same temperature: simple...
A student performed a simple distillation in an attempt to
separate the two components of a 50/50 solution of hexane and
toluene. While doing so, the student recorded the temperature of
the vapors as the distillation proceeded. The data is included
below. Using the provided data, make a graph of temperature of the
vapors versus the volume of distillate collected.
Distillation data Volume (mL) Temp (deg C) 0.05 74 74 2 75 3 76 4 78 5 79 6 80...
(b) Estimate the boiling points
(b.p.) of compound C (lower boiling) and compound D (higher
boiling)?
Compound C b.p.
°C Compound D b.p.
°C
A mixture of two compounds was distilled by simple and fractional distillation, with compound C being the lower boiling compound and compound D being the higher boiling compound. Graphs of temperature versus volume of distillate collected are rovided for Distillation 1 and Distillation 2 80 75 O 70 2 65 60 2 55...
Questions about distillation:
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