Answer :
Final answer:
The reaction order is first order.
Explanation:
In this question, we are given that the reactants concentration was changed from 10 M to 5.0 M, and the reaction half-life was changed from 150 to 300 seconds. We need to determine the reaction order based on this information.
The reaction order can be determined by comparing the change in reaction rate with the change in reactant concentration. In this case, the reactant concentration was halved (from 10 M to 5.0 M), and the reaction half-life doubled (from 150 to 300 seconds).
Based on this information, we can conclude that the reaction order is first order. When the reactant concentration is halved, the reaction rate is also halved, indicating a first-order reaction.
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