Why is half-life of a first-order reaction independent of concentration of the reactant?
Why is half-life of a first-order reaction independent of concentration of the reactant?
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1 Answer
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To understand the phenomenon behind this, have a close look at the formula of the first order reaction.
t1/2 = 0.693/k
Here, we can see that the half life is only dependent on k (rate constant) since there is no [A]' in the formula. Hence, we can easily conclude that the half life of a first order reaction is independent of the initial concentration [A]'.
Similar Questions for you
This is the type of reaction which bheavies like a first order reaction inspite of being a higher order reaction (second or third). This happens due to a particular reactant being present in an excessive quantity thorughout the chemical reaction.
These are the important highlights of integrated rate equations:
- predict the rate of a reaction
- calculate order of reaction (zero, first, second)
- understand mechanism of a reaction
- compute half life
- calculate the value of k
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