Concept:The defining characteristic of a zero-order reaction is that its rate does not change as the reactant concentration changes.
Formula:$$ \text{Rate} = k[\text{A}]^{0} = k $$
Solution:- In a rate law expression for a zero-order reaction, the sum of the exponents of the concentration terms is zero.
- Any value raised to the power of zero is 1. Therefore, the rate equals the rate constant (\( k \)).
- This means the rate is completely independent of the concentration of the reactant(s).
Why other options are incorrect:Rate is always independent of product concentration in standard initial rate laws. However, the specific hallmark defining 'zero order' is its independence from the
reactant concentration. Temperature always affects the rate constant \( k \).
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