MDCAT Chemistry MCQ #2217

For which of the following gaseous reversible reactions is the value of Kp numerically equal to the value of Kc?

MDCAT Chemistry MCQ #2217

  1. Question 1

    Q1. For which of the following gaseous reversible reactions is the value of Kp numerically equal to the value of Kc?

    • A) H2 + I2 ℑ 2HI
    • B) PCl5 ℑ PCl3 + Cl2
    • C) N2 + 3H2 ℑ 2NH3
    • D) 2SO2 + O2 ℑ 2SO3

    Answer: H2 + I2 ℑ 2HI

    Explanation: Kp = Kc(RT)^Δn. For Kp to equal Kc, Δn (moles of gaseous products minus reactants) must be 0. Option B results in Kp = Kc(RT).