For the second-order reaction below, the initial concentration of A is 1.00 M. If the concentration of A is reduced to 0.43 M after 75 seconds, what is the rate constant?
2A → B
rate = k[A]^2
a. 5.2 x 10^-4 L/mol·s
b. 5.7 x 10^-3 L/mol·s
c. 7.6 x 10^-3 L/mol·s
d. 1.1 x 10^-2 L/mol·s
e. 1.8 x 10^-2 L/mol·s