Kinetics 2

1. If the concentration of A drops from 0.93 to 0.23 in 28.4 min the

reaction is second order, what is the rate constant for the reaction?

2. Derive the equation ln(Ao/A)= kt starting with the rate equation for a first order reaction.

3. Explain what the term pseudo first order means and give an example.

4. Graphically (Using MathCad) show what order the following reaction is and determine the rate constant. Show the graph for both first and second order plots.

Concentration/M	.0582	.0370	.0264	.0206	.0168
time/sec	0	200	400	600	800

5. The following data were obtained on the rate of hydrolysis of 17% sucrose in .099 M HCl aqueous solutions at 35 C.

t/min.	0	9.82	59.6	93.18	142.9	294.8	589.4
%sucrose	100	96.6	80.3	71.0	59.3	32.8	11.1

Graphically (using MathCad) show what order this reaction is and determine the rate constant. Show the graph for both first and second order plots.