Sunday, February 7, 2010

Can you help me pick out the false statement out of the 5?

Identify the incorrect statement. A. The rate of a reaction changes throughout the life of the reaction. B. when a 2nd order reaction is doubled in reactant concentration the rate quadruples. C. The order with respect to each reactant must be determined experimentally. D. A catalyst increases the energy of activation. E. The rate determining step has the highest Ea on a reaction coordinate diagramCan you help me pick out the false statement out of the 5?
The answer is D.





A catalyst actually decreases, not increases, the energy of activation. That is how it is able to speed up the reaction.





';A'; is incorrect, because it is TRUE that the rate of a reaction changes throughout the life of the reaction.(e.g., slower in the determining step)Can you help me pick out the false statement out of the 5?
definitely A


it's redundant


it should be something like this:


The rate of a reaction changes throughout its life.
D. A catalyst is a substance that increases the rate of a reaction without being consumed by it. It does this by changing the reaction path to one with lower activation energy.





Duke-dude...if you don't want to answer questions to help people with their Homework, don't log on.
The incorrect statement is D.





A catalyst speeds up a reaction by reducing the activation energy, not by increasing it; this would cause the reaction to slow down instead.

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