The knowledge of initial concentration and rate constant is necessary to determine the half life time of a reaction of _______________ order?
Correct answer: C. Second
- A. Zero
- B. First
- C. Second
- D. None of these
Explanation
For a second-order reaction, the half-life is t₁/₂ = 1/(kC₀), so both the initial concentration and rate constant are needed. First-order half-life depends only on k, while zero-order half-life also depends on C₀ but is not the intended choice here.
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