Chemical Kinetics. Kinetics. The study of reaction rates. Spontaneous reactions are reactions that will happen - but we can’t tell how fast. (Spontaneity implies nothing about speed) For example: Diamond will spontaneously turn to graphite – so slow it is not detectable.

ByChemical Kinetics. By- A.P.S. BHADOURIYA M.Sc.( Lko . Uni. ) , B.Ed. NET(UGC-CSIR). Chemical Kinetics. The branch of chemistry, which deals with the study of reaction rates and their mechanisms, called chemical kinetics.

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Rate Expression. The rate expression is an equation Determined experimentally Shows dependence of rate on concentrations of reactants Rate is found whilst changing concentration of a reactant. Rate Expression. Order of Reaction. Experimental Data. Experimental Data.

Rate Law. Learning Goals: I will be able to write a rate law equation using a table of data and calculate rate constants .I will become familiar with reaction mechanisms and how they relate to the rate law . Rate Law Equation.

Rate Law. Example 1: N 2 O 5 2NO + ½ O 2. CH 3 CHO CH 4 + CO. (CH 3 ) 3 CBr + OH - (CH 3 ) 3 COH + Br -.

Rate Law. Mathematical expression that allows calculation of reaction rate as a function of reactant concentration. All Chemical Reactions Show:. Reaction rate depends on (is a function of) reactant concentration

Reaction Rate Law Definition : The rate, r , will always be proportional to the product of the initial concentrations of the reactants . For a general reaction … a X + b Y -------> … the rate law expression is: r = k [X] m [Y] n [X] & [Y] = molar concentrations of X & Y

Integrated Rate Law. 2 types of rate laws. The differential rate law (what we have already done, often called simply the rate law ) shows how the rate of reaction depends on concentration. The integrated rate law shows how the concentrations of species in the reaction depend on time.

a A + b B c C + d D. The Rate Law. The rate law expresses the relationship of the rate of a reaction to the rate constant and the concentrations of the reactants raised to some powers. Rate = k [A] x [B] y. reaction is x th order in A. reaction is y th order in B.

The Rate Law. Objectives: To understand what a rate law is To determine the overall reaction order from a rate law CLE 3224.3.3 . Initial Reaction Rate.

Differential Rate Law. Differential Rate Law. Deals with dependence of rate on… concentration. The important question. How will the rate of reaction change if we change the concentration of our reactants?. A simple example. Reaction A --> P. Method of initial rates.

Integrated Rate Law. Rate laws can be converted into equations that tell us what the concentration of the reactants or products are at any time Calculus required to derive the equations but not to use them. First Order Reactions. Rate = k[A]