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1. Calculate the numbers of moles of air trapped at 5°C. Assume the vapour pressure of water at this temperature is zero. Pair = Patm - Pvapour of water Then; nair = Pair V/RT = (Patm - Pvapour of water) V/ RT = Patm V / RT

1. Calculate the numbers of moles of air trapped at 5°C. Assume the vapour pressure of water at this temperature is zero. Pair = Patm - Pvapour of water Then; nair = Pair V/RT = (Patm - Pvapour of water) V/ RT = Patm V / RT

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Hello. Can you please use three questions of my remaining subscription questions to answer the questions below? Use the number of moles: n = 0.0001927. Thank you in advance.

 

Experiment 2: Determination of vapour pressure and enthalpy of vaporisation Atmospheric pressure is 1 atm (Patm). 1 atm = 101.3 kiloPascal (kPa) = 760 mmHg =760 torr. 1 bar = 100 kPa L- atm J R=0.08214 = 8.314 mol - K mol · K Temperature (°C) 5 50 55 Volume (mL) 4.4 5.9 6.2 60 6.7 65 7.0 70 75 8.0 9.4 10.0 80 1. Calculate the numbers of moles of air trapped at 5°C. Assume the vapour pressure of water at this temperature is zero. Pair = Patm - vapour of water Then; nair = PairV/RT = (Patm - P, vapour of water) V/ RT = Patm V / RT 2. Calculate the partial pressure of air in the gas mixture for each temperature as follow: Pair = nair RT / V 3. Calculate the vapour pressure of water at each temperature: Pvapour of water = Patm - Pair = Patm - nair RT/ V
Transcribed Image Text:Experiment 2: Determination of vapour pressure and enthalpy of vaporisation Atmospheric pressure is 1 atm (Patm). 1 atm = 101.3 kiloPascal (kPa) = 760 mmHg =760 torr. 1 bar = 100 kPa L- atm J R=0.08214 = 8.314 mol - K mol · K Temperature (°C) 5 50 55 Volume (mL) 4.4 5.9 6.2 60 6.7 65 7.0 70 75 8.0 9.4 10.0 80 1. Calculate the numbers of moles of air trapped at 5°C. Assume the vapour pressure of water at this temperature is zero. Pair = Patm - vapour of water Then; nair = PairV/RT = (Patm - P, vapour of water) V/ RT = Patm V / RT 2. Calculate the partial pressure of air in the gas mixture for each temperature as follow: Pair = nair RT / V 3. Calculate the vapour pressure of water at each temperature: Pvapour of water = Patm - Pair = Patm - nair RT/ V
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