Answer to Question #11489 in Physical Chemistry for yelona

Question

75percent of a first order reaction was completed in 32 minutes.when was 50percent of the reaction completed?

Answer 1

v=
dC/dt.
v=const
v1=v2
v1=dC1/dt1
v2=dC2/dt2
dC1/dt1=dC2/dt2
(75)/32=(50)/x
2.34375=50/x
2.34375x=50
x=21.33
min