Which of the following effectively increases the reactant concentration and increases the reaction rate

decreasing pressure

heating the reactant mixture

increasing pressure

cooling the reactant mixture



Which of the following decreases the activation energy of a reaction?

decreasing the temperature

removing reactant molecules

removing a catalyst

adding a catalyst



Which of the following statements correctly expresses collision theory?

Reactants collide with products to form activated complex that separates into reactants.

Reactants collide with reactants to form activated complex that separates into products.

Products collide with reactants to form products that separate into activated complex.

Products collide with activated complex to form reactants.




For the chemical reaction CH3Br + OH-- ----> CH3OH + Br --, which of the following would speed up the reaction?

increasing the CH3Br concentration

reducing the OH -- concentration

cooling the reactant mixture

reducing the pressure of the reactant mixture

1) increasing pressure

2) adding a catalyst

3) reactants collide with reactants to form activated complex that separates into products.

4) increasing the CH3Br concentration