Derive the expression for half life of nth order reaction
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Answer:
The half-life for a general nth order reaction is given by the expression .
t(1/2) = {2^(n-1) - 1} / {k(n-1)([A]^(n-1))}
the integrated rate law will be given by
1/A^n-1=1/A0^n-1 +(n-1)kt
therefore t1/2 /t3/4=2^n-1 -1/4^n-1 -1
Explanation:
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The expression for half-life of nth order reaction is given in the explanation for each order of the reaction.
Explanation:
- The half-life period of a chemical reaction is defined as the time taken to determine the concentration of a given reactant reaching almost half of its initial concentration.
- It is the time taken for the reactant concentration to reach half of its value.
- It is denoted by and is usually expressed in seconds.
- For zero-order reaction the expression to determine the half-life period is
- For first-order reaction the expression to determine the half-life period is
- For second-order reaction the expression to determine the half-life period is
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