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Per NCERT §6.3 eqn 6.4, for the reaction aA + bB ⇌ cC + dD, the equilibrium constant Kc is expressed as which?
A[A]^a [B]^b / [C]^c [D]^d
B[C]^c [D]^d / [A]^a [B]^b
C[A][B][C][D]
D[C][D] / [A][B]
Answer & Solution
Correct answer: B. [C]^c [D]^d / [A]^a [B]^b
NCERT eqn 6.4 (Law of Mass Action, Guldberg-Waage 1864): Kc = products / reactants, each raised to stoichiometric coefficient.
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