For determining the order of reaction we use__________________?
Correct answer: D. Half life method
- A. Refractometric method
- B. Dilatometric method
- C. Optical activity method
- D. Half life method
Explanation
The half-life method determines reaction order because the dependence of half-life on initial concentration differs for zero-, first-, and second-order reactions. Students may choose the optical activity method because it can monitor a reaction, but it measures concentration through rotation and is not the general method named here for finding order.
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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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