Question
In which of the following equilibrium Kc and Kp are not equal?
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2NO (g) ⇌ N2 (g) + O2 (g)
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SO2 (g) + NO2 (g) ⇌ SO3 (g) + NO (g)
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H2 (g) + I2 (g) ⇌ 2 HI (g)
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2C (s) + O2 (g) ⇌ 2CO2 (g)
Solution
D.
2C (s) + O2 (g) ⇌ 2CO2 (g)
The reaction for which the number of moles of gaseous products (np) is not equal to the number of moles of gaseous reactants (nR), has a different value of Kc and Kp.
a) np = nR = 2 thus, Kp = Kc
b) np = nR = 2 thus, Kp = Kc
c) np = nR = 2 thus, Kp = Kc
d) np = 2, nR = 1 thus, Kp not equal to Kc
