Practice Kp Expressions (8.4.2) - Combustion and Fuels

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6 sample questions

Question 1.
What is the formula for Kp?
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Think about products over reactants.
Question 2.
True or False: Kp only applies to gas-phase reactions.
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Consider which states of matter contribute to partial pressures.
3Question 3.
What indicates that a reaction favors products at equilibrium?
- Kp < 1
- Kp = 1
- Kp > 1
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Think about the numerators and denominators in the Kp expression.
4Question 4.
True or False: The value of Kp changes with temperature.
- True
- False
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Consider the principles of chemical thermodynamics.
Question 5.
Calculate Kp for the reaction N2(g) + 3H2(g) ⇌ 2NH3(g) if pN2 = 0.5 atm, pH2 = 1.5 atm, and pNH3 = 0.3 atm.
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Apply the Kp formula correctly using given pressures.
Question 6.
Consider the reaction 4H2(g) + S8(s) ⇌ 4H2S(g). If the Kp was found to be 6.5 at 1000°C, what could indicate about the reaction's direction?
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Analyze the implications of Kp values versus unity.

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