Under which circumstances are K p and K c equal for the reaction aA(g) + bB(g)mcC(g) + dD(g) ?

Under which circumstances are K p and K c equal for the reaction

aA(g) + bB(g)mcC(g) + dD(g) ?

(a) If a + b = c + d.

(b) If the reaction is reversible.

(c) If the equilibrium constant is small.

1 Answer

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  • 5 years ago
    Best Answer

    When there are the same number of moles of gas on each side of the arrow so that Δn is zero.

    Kp = Kc(RT)^Δn

    When Δn is zero the equation becomes Kp = Kc(1). Any quantity to the zero power is 1.

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