7. Answer the following true/false questions about any general, arbitrary reacti

Question

7. Answer the following true/false questions about any general, arbitrary reaction. a. as reactant particles approach each other before a collision, the potential energy goes down while the b. as particles of newly formed products move away from one another, the potential energy goes down, c. as reactant molecules approach each other, they exert attractive forces on each other. Thus, kinetic energy goes up. while the kinetic energy goes up as they mo together, their speed decreases and their Potential Energy increases.

Explanation / Answer

(7) (a) False

       (b) True

       (c)   True

(8) Collision theory states particles must collide with a certain minimum energy called the activation energy.

If there is not enough energy, the reaction will not occur.

Only those particles having of the activation energy will react when they collide.

To increase the rate of a reaction, you must increase the number of successful collisions.

One way of doing this is to provide an alternative way for the reaction to happen which has a lower activation energy.

A catalyst has exactly this effect on activation energy. It provides an alternative route for the reaction. That alternative route has lower activation energy so the reaction speeds up

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