For 3rd order reaction rate=k[A][B]² when concentration of both reactant is doubled the new rate becomes:
Correct answer: D. octupled
- A. halved
- B. doubled
- C. quadrupled
- D. octupled
Explanation
For rate equal to k[A][B]2, doubling A doubles the rate and doubling B multiplies it by 4, so doubling both multiplies the rate by 2 times 4, which is 8. Quadrupled is what you get if the change in A is forgotten.
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About Order of Reaction
Reaction order shows how the rate depends on the concentration of each reactant, as expressed in the rate law. Coverage includes zero, first and second-order reactions, integrated rate equations, half-life, units of rate constants and the distinction between overall order and molecularity.
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