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JAMB Chemistry 1992 Question 29

Question 29

Chemical Equilibrium

For a general equation of the nature xP + yQ ⇌ mR + nS, the expression for the equilibrium constant is

  1. A.k[P]x[Q]y.
  2. B.[P]x[Q]y/[R]m[S]n
  3. C.[R]m[S]n/[P]x[Q]y
  4. D.m[R]n[S]/x[P]y[Q]
Show the answer and explanation

Answer: C ([R]m[S]n/[P]x[Q]y)

Explanation

K = concentrations of products ÷ concentrations of reactants, each raised to the power of its coefficient: [R]m[S]n/[P]x[Q]y.