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| 1 | |
At what temperature will 20% of carbon dioxide disassociate to carbon monoxide when the pressure is 0.1 atm? |
| | A) | 2240 K |
| | B) | 2420 K |
| | C) | 2690 K |
| | D) | 3120 K |
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| 2 | |
Excess air is used in combustion reactions to control flame temperatures. Excess air will also _________________ when Δν is positive. |
| | A) | Produce more incomplete combustion |
| | B) | Produce more complete combustion |
| | C) | Produce undesirable combustion |
| | D) | Have no effect |
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| 3 | |
A mixture of 1 kg-mol of CO and 1 kg-mol of O2 is heated to 3000 K at a pressure of 1 atm. What fraction of the original CO becomes CO2? |
| | A) | 27.8% |
| | B) | 37.6% |
| | C) | 69.2% |
| | D) | 90.1% |
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| 4 | |
Increasing the temperature of an ideal gas increases ________________. |
| | A) | The number of reactants in the products |
| | B) | The number of inert gases in the product |
| | C) | The number of disassociation products |
| | D) | None of these |
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| 5 | |
A mixture consists of 1 kg-mol of CO, 1 kg-mol of O2, and 2 kg-mol of N2. Treating the nitrogen as an inert gas, how much CO2 is formed when the temperature and pressure of this mixture is 2600 K and 1 atm? |
| | A) | 0.371 kg-mol |
| | B) | 0.615 kg-mol |
| | C) | 0.832 |
| | D) | 0.957 kg-mol |
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| 6 | |
A mixture of 1 kg-mol of CO2, 1 kg-mol of O2, and 2 kg-mol of N2 is heated to 4000 K at a pressure of 1 atm. Assuming that the final mixture consists of CO2, CO, O2, O, and N2, how much atomic oxygen is present in the final mixture? |
| | A) | 0.33 |
| | B) | 0.50 |
| | C) | 0.67 |
| | D) | 0.90 |
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| 7 | |
What is the approximate heat of reaction at 3400 K for the disassociation of CO2 to CO? |
| | A) | 5961 kJ/kg-mol |
| | B) | 7482 kJ/kg-mol |
| | C) | 8785 kJ/kg-mol |
| | D) | 9213 kJ/kg-mol |
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| 8 | |
A system is composed of gasoline liquid and vapor, and air. According to Gibbs phase rule how many independent properties are required for phase equilibrium? |
| | A) | 0 |
| | B) | 1 |
| | C) | 2 |
| | D) | 3 |
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| 9 | |
When the water temperature of the Great Salt Lake is 20°C, what is the mass fraction of the salt dissolved in the water? |
| | A) | 26.5% |
| | B) | 32.1% |
| | C) | 36.7% |
| | D) | 40.3% |
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| 10 | |
The contents of a can of soft drink consists of CO2 dissolved in water and a vapor space filled with CO2 and H2O vapor. At 17°C and 2 atm, what is the mole fraction of the CO2 in the liquid mixture? |
| | A) | 0.00156 |
| | B) | 0.00735 |
| | C) | 0.0107 |
| | D) | 0.0312 |
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