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The current vs. time graph for a particular electrochemical reaction (run at 25°C) shows that the current drops off to ¼ its initial value after 60 minutes. What is the half-life for this reaction? Increasing the cell temperature from 25°C to 35°C causes the current to drop off to ¼ of its initial value in 30 minutes. What is the activation barrier for the reaction?

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