Module 6 Unit 1 Assignment A
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Fanshawe College *
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Mechanical Engineering
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Jan 9, 2024
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MODULE 6 UNIT 1
Assignment Part A
By: Connie Warburton
Answers must include calculations.
1.
Some hydrogen gas is collected over water at 20.0°C. The partial
pressure of hydrogen is 98.99 kPa. What is the barometric (total) pressure
at the time the gas is collected?
(2 marks)
Pwater = 98.99 kPa – 2.34 kPa = 96.65 kPa
Ptotal = Pwater + PHydrogen
Ptotal = 96.65 kPa + 98.99 kPa
Ptotal = 195.64 kPa
2.
Helium gas is collected over water at 25°C. What is the partial pressure of
the helium, given that the barometric pressure is 99.99 kPa?
(2 marks)
PHelium = 99.99 kPa – 3.17 kPa = 96.82 kPa
3.
690.0 mL of carbon dioxide are collected over water at 26.0 °C and a total
pressure of 96.7 kPa. What is the volume of dry carbon dioxide? (
4
marks
)
Pwater = 3.26 kPa
Ptotal = 96.7 kPa
Vtotal = 690.0 mL
PCO
3
= 96.7 kPa – 3.26 kPa = 93.34 kPa
VCO
2
= 690.0 mL CO
2
x 93.34 kPa ÷ 96.7 kPa
VCO
2
= 666.0248190279
VCO
2
= 666.0 mL
4.
A sample of oxygen collected over water when the atmospheric pressure
was 101.5 kPa and the room temperature, 24 °C occupied 105.8 mL.
What would be the volume of this dry gas
(4 marks)
Pwater = 2.98 kPa
Ptotal (atm) = 101.5 kPa
Vtotal = 105.8 mL
Poxygen = 101.5 kPa – 2.98 kPa = 98.52 kPa
Voxygen = 105.8 mL x 98.52 kPa ÷ 101.5 kPa
Voxygen = 102.6937536946
Voxygen = 102.7 mL
1
Total : 12 marks
Submission Instructions
Submit your assignment using the drop box on the Assignment page for this unit.
Remember to include references.
2
References:
Fanshawe College (2023) “Module 6 unit 1 presentation” retrieved from
https://olmoodle.ontariolearn.com/mod/scorm/player.php?
a=8782¤torg=articulate_rise&scoid=17774&sesskey=UyugQgN7Bq&
display=popup&mode=normal
Fanshawe
College (2023) “Module 6 unit 1 vapor pressure chart” retrieved
from
https://olmoodle.ontariolearn.com/mod/scorm/player.php?
a=8782¤torg=articulate_rise&scoid=17774&sesskey=UyugQgN7Bq&
display=popup&mode=normal
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