If the reaction A + B -----> AB. If concentration of A and B are doubled, the rate of reaction will:
Correct answer: C. Increase four times
- A. Increase two times
- B. Decrease to one half
- C. Increase four times
- D. Decrease to one
Explanation
Initial rate:Rateinitial = k[A][B] After doubling [A] and [B]:[A] → 2[A], [B] →2[B] Ratenew = k(2[A])(2[B]) = 4k[A][B] Compare new rate to initial rateRatenew = 4 × Rateinitial
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About Chemical Equilibrium
Reversible reactions reach dynamic equilibrium when forward and reverse rates become equal, and Le Chatelier's principle predicts the effect of changing concentration, pressure or temperature. The chapter also covers solubility product, the common ion effect, buffer action and the conditions used in Haber's process, with equilibrium shifts distinguished from changes in the equilibrium constant.
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