For the Isomerization Reaction: Butane ⇌ Isobutane

question 47

Multiple Choice

For the isomerization reaction: butane ⇌ isobutane
K_p equals 25.0 at 500 °C. If the initial pressures of butane and isobutane are 20.0 atm and 0.0 atm, respectively, what are the pressures of the two gases at equilibrium?

• A) P(butane) = 0.77 atm and P(isobutane) = 19.2 atm
• B) P(butane) = 0.80 atm and P(isobutane) = 20. atm
• C) P(butane) = 19.2 atm and P(isobutane) = 0.77 atm
• D) P(butane) = 20 atm and P(isobutane) = 0.80 atm

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