MP Board · Class 12 · Chemistry · Chemical KineticsThe half-life period ($t{1/2}$) of a first-order reaction is:
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Step-by-Step Solution
For a first-order reaction, the integrated rate equation gives $t_{1/2} = \frac{0.693}{k}$. It is independent of the initial concentration of the reactants.
Detailed Options Breakdown
Option : Inversely proportional to initial concentration
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Chemical Kinetics.
Option 1: Independent of initial concentration (Correct Answer)
Correct choice. Refer to the step-by-step verified solution guidelines above for details.
Option 2: Directly proportional to initial concentration
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Chemical Kinetics.
Option 3: Proportional to square of initial concentration
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Chemical Kinetics.
💡 Study Guide: This question tests core syllabus concepts from Chemical Kinetics. For formulas, key summaries, and mock exam reference guides, read the full Chemical Kinetics Revision Notes.