Question

HW 11 Noah - YANG > Activities and Due Dates > HW 11 Resources Hint Check ent Score: 50/1800 Lion 15 of 18 ) s at 300 °C. The rate constant for this zero-order reaction is 0.0250 M A products How long (in seconds) would it take for the concentration of A to decrease from 0.860 M to 0.290 M? F G H J K L V B N M < >

Answer 1

solution: A - Product be a zero order reaction Let initial Core: Concentrates after (a). [A] time 't jilat - d[A] 2 [A] > -d] =k, whre ica vatistant, [A]º-, =) -a [A] = kat > - Sam] = Sieat =) - [A] =kt tc - where c= Cestant of - intigraters initially when too, LA] = {A). .. -Alo = KXotc - Putty c = 4A), in cao = - [4] = kz - LA = kt = (4).- (A)

7 t = [A2. - [A] IC Given: K=0.0250 M. 5 [A] =0.860M [A] = 0.290 M Putty valus, t= 0.860 -0.290 e 0.0250 = t = 22. 85 at= [22.8 seconds