How can measuring half-life indicate if a reaction is first order?
Measure successive half-lives; if they are the same, the reaction is first order.
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What is the formula that links rate constant (k) and half-life (t21) of a first-order reaction?
k = rate constant (s-1)
t21 = half-life (s)
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How is the initial rate determined in the initial rates method?
The initial rate is determined by calculating the gradient of a tangent drawn at time = 0 on a concentration-time graph.
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What is meant by the half-life of a reaction?
The half-life of a reaction is the time it takes for the concentration of a reactant to decrease to half of its original value.
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What are the typical shapes of rate vs. concentration graphs for zero, first, and second order reactions?
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What are the typical shapes of concentration vs. time graphs for zero, first, and second order reactions?
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