A 250 mL flask contains air at 1.061 atm and 20.3 °C. 5 mL of ethanol...
A 250 mL flask contains air at 1.061 atm and 20.3 °C.
5 mL of ethanol is added, the flask is immediately sealed and then
warmed to 93.3 °C, during which time a small amount of the
ethanol vaporizes. The final pressure in the flask (stabilized at
93.3 °C) is 2.833 atm.
(Assume that the head space volume of gas in the flask
remains constant.)
a. What is the partial pressure of air, in the
flask at 93.3 °C?
1homework pts
| Tries 0/5 |
b. What is the partial pressure of the ethanol
vapour in the flask at 93.3 °C?
1homework pts
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A 250 mL flask contains air at 1.061 atm and 20.3 °C.
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1. Calculate what the pressure of the air is in the flask at each of the...
1. Calculate what the pressure of the air is in the
flask at each of the temperatures for Trials 1 through 5. The
temperature is related to the temperature (at constant volume and
number of moles) through Gay-Lussac's Law.
2. Calculate the natural logarithm of the vapor
pressures, ln(P/P^-), where P^- is 100 kPa.
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1. Calculate what the pressure of the air is in the
flask at each of the temperatures for Trials 1 through 5. The
temperature is related to the temperature (at constant volume and
number of moles) through Gay-Lussac's Law.
2. Calculate the natural logarithm of the vapor
pressures, ln(P/P^-), where P^- is 100 kPa.
3. Calculate the inverse of the absolute
temperatures.
4. Prepare a graph (either by hand or in excel) with
ln(P/P^-) plotted on the y-axis and 1/T...
5. A sample of gas at 4.0 atm and 25,0 mL is heated from 25°C to 40°C. If the pressure remains constant, what is the final volume of the gas? a. 26.2 ml d. 105 ml b. 40.0 ml e. 25.0 ml C. 23.8 ml ID: A Name:
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