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For the reaction: 2NO2(g) ⇌ 2NO(g) + O2(g), (Kc = 1.8 × 10⁻⁶ at 184°C) [R = 0.0831 kJ/(mol.K)] When Kp and Kc are compared at 184°C, it is found that
- Whether Kp is greater than, less than, or equal to Kc depends upon the total gas pressure
- Kp = Kc
- Kp is less than Kc
- Kp is greater than Kc
Correct answer: Kp is greater than Kc
Solution
Kp is greater than Kc because the reaction produces more moles of gas on the product side than on the reactant side, leading to a higher partial pressure of products compared to the reactants, which increases Kp relative to Kc.
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