Half life period of a chemical reaction is_________________?
Correct answer: B. The time required to reduce the concentration of the reacting substance to half its initial value
- A. Half of the space time of a reaction
- B. The time required to reduce the concentration of the reacting substance to half its initial value
- C. Half of the residence time of a reaction
- D. None of these
Explanation
Half-life is defined as the time required for the concentration of a reactant to fall to one-half of its initial value. It is not generally equal to half the space time or residence time, which are reactor-operation quantities.
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