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The activation energy of a reaction can be determined from the slope of which of the following graphs?

1. ln K vs. 1/T
2. ln K vs. T
3. T/ln K vs. 1/T
4. ln K vs. T

Correct answer: ln K vs. 1/T

Solution

The activation energy (Ea) can be determined using the Arrhenius equation, which relates ln K to 1/T. The slope of the graph of ln K vs. 1/T is proportional to -Ea/R.

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