Question

Reaction rates are affected by concentration, collision geometry, and the presence of a catalyst. Which of the following statements is FALSE concerning these factors? Increasing the concentration of reacting particles increases the chance for collisions. A catalyst lowers the activation energy requirement. A reaction occurs each time particles of the reactants collide. The slowest reaction involved in a reaction mechanism determines the rate of overall reaction.

Answer 1

The first one is FALSE

Answer 2

Answer: A reaction occurs each time particles of the reactants collide.

Step-by-step explanation:

• A chemical reaction is a process in which the reactants combine together to form a product accompanied by breakage of old bonds and formation of new bonds.

• It is not necessary that the reaction will occur each time the particles of reactants collide.

• For a reaction to occur due to a collision, it is necessary for the particles to collide with enough energy such that the old bonds get broken and they collide in a proper orientation.

• If the above conditions are not met, a chemical reaction will not occur even after a collision.