Can excess heat slow down or stop a reaction?

[mballaz]

I need to find out whether there is a maximum amount of heat that one can apply to a certain reaction in order to increase its rate, as described by the collision theory. In other words, is there such thing as too much heat when referring to speeding up the reaction in question? Can enough heat "kill" a reaction and prevent it from occurring?

btw nice site, looks very promising

 

[Borek]

There is always a risk that competing reactions will become faster than the one you need, or that you will change something in the system, making the reaction impossible - like boiling out the water if reaction takes place in the solution.

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