15.23 part C

[Nikhil_Madan_3C]

Determine the rate constant for each of the following first-order reactions, in each case expressed for the rate of loss
of A: (a) A --> B, given that the concentration of A decreases to one-half its initial value in 1000. s; (b) A --> B, given that the concentration of A decreases from 0.67 mol L^-1 to 0.53 mol L^-1 in 25 s;(c) 2A --> B + C, given that [A]0 = 0.153mol L^-1 and that after 115 s the concentration of B rises to 0.034 mol L^-1.

For part C, How would you find [A]t?

[Chem_Mod]

The concentration decrease in A is two times the concentration increase in B as shown in the coefficients in the reaction