reaction rates are affected by concentration, collision geometry, and the presence of a catalyst. which of…

reaction rates are affected by concentration, collision geometry, and the presence of a catalyst. which of the following statements is false concerning these factors?\nthe slowest reaction involved in a reaction mechanism determines the rate of overall reaction.\na catalyst lowers the activation energy requirement.\nincreasing the concentration of reacting particles increases the chance for collisions.\na reaction occurs each time particles of the reactants collide.

reaction rates are affected by concentration, collision geometry, and the presence of a catalyst. which of the following statements is false concerning these factors?\nthe slowest reaction involved in a reaction mechanism determines the rate of overall reaction.\na catalyst lowers the activation energy requirement.\nincreasing the concentration of reacting particles increases the chance for collisions.\na reaction occurs each time particles of the reactants collide.

Answer

Brief Explanations:

  1. The slow - step in a reaction mechanism is the rate - determining step, so the first statement is true.
  2. Catalysts function by lowering the activation energy, making the second statement true.
  3. Higher reactant concentration leads to more frequent collisions, validating the third statement.
  4. For a reaction to occur upon collision, particles must have proper orientation and sufficient energy (activation energy). So, not every collision results in a reaction, making the fourth statement false.

Answer:

A reaction occurs each time particles of the reactants collide.