What concentration terms appear in the rate equation?

By which of the following mechanisms does a catalyst operate? a. It decreases the activation energy barrier for a reaction. b. It serves as a reactant and is consumed. c. It increases the temperature of a reaction. d. It increases the concentration of reactants.

Rate law experiments dont always give data in the form of a rate in moles per second. Some of them give an amount of time necessary for a reaction to proceed to a given point. The faster the rate, the less time necessary. For the following data, assume that the time given is to react 0.10M of A. Determining the complete rate law for the reaction A+Bproducts. Time taken (s) [A] [B] 36.8 0.20 0.40 25.0 0.20 0.60 10.0 0.50 0.60 A classic chemical reaction/demonstration called the iodine clock reaction is usually measured this way.

Apply collision theory to explain why increasing the concentration of a reactant usually increases the reaction rate.

Many conditions need to be met to produce a chemical reaction between molecules. What if all collisions between molecules resulted in a chemical reaction? How would life be different?

A reaction is started by mixing reactants. As time passes, the rate decreases. Explain this behavior that is characteristic of most reactions.

Define these terms: (a) unimolecular reaction (b) bimolecular reaction (c) elementary reaction (d) overall reaction

Consider the following hypothetical reaction: A+BC Calculate the average rate of the reaction on the basis of the following information: a. Pure A and B are mixed, and after 12.0minutes the measured concentration of C is 0.396mol/L. b. Pure A,B, and C are mixed together at equal concentrations of 0.300M. After 8.00minutes, the concentration of C is found to be 0.455M.

Chemical reactions occur when reactants collide. What are two factors that may prevent a collision from producing a chemical reaction?

Consider the following hypothetical reaction: A+BC Calculate the average rate of the reaction on the basis of the following information: a. Pure A,B, and C are mixed together at concentrations of A+B=0.400M, C=0.150M. After 6.00minutes, the concentration of C is 0.418M. b. Pure A, and B are mixed together at same concentrations of 0.361M. After 7.00minutes, the concentration of A is found to be 0.048M.