PLEASE SHOW WORK For a reaction of A B Cit takes 100 seconds for the concentrati

Q: PLEASE SHOW WORK For a reaction of A B Cit takes 100 seconds for the concentrati

1. Calculate lnC and 1/C Time, s Conc., mol/L lnConc. 1/conc. 0 0.100 -2.30 10 100 0.050 -2.99 20 300 0.025 -3.69 40 The linear variation is 1/c versus t, so the reaction order is 2. 1/C = kt + 1/C0 (general expression for a 2nd reaction rate law, integral form) 40= k Time, s Conc., mol/L lnConc. 1/conc. 0 0.100 -2.30 10 100 0.050 -2.99 20 300 0.025 -3.69 40

ID: 872147 • Letter: P

Question

PLEASE SHOW WORK

For a reaction of A B Cit takes 100 seconds for the concentration of A to decrease from 0.100 M to 0.050 M and then another 200 seconds to decrease to 0.025 M. What is the value of the rate constant? b) 0.100 M-1-s 1 (d) 10.0 M 1-s (e) 144 s The activation energy of a reaction whose rate constant increases by a factor of 10.0 when the temperature increases from 303 K to 333 K is (a) 30 kJ/mol 33 kJ/mol (c) 46 kJ/mol (d) 64 kJ/mol (e) 89 kJ/mol The rate constant for a second-order reaction is 0.47 M 1-s i. If the initial concentration of the reactant is 0.25 M, how many seconds will it take for the concentration to decrease to 0.13 M? (a) 7.9 (b) 1.4 (c) 3.7 (d) 1.7 (e) 0.13

Explanation / Answer

Calculate lnC and 1/C

Time, s

Conc., mol/L

lnConc.

1/conc.

0.100

-2.30

100

0.050

-2.99

300

0.025

-3.69

The linear variation is 1/c versus t, so the reaction order is 2.

1/C = kt + 1/C0 (general expression for a 2nd reaction rate law, integral form)

40= k