wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

A first order reaction is 60% complete in 20 minutes. How long will the reaction take to be 84% complete?

A
76 mins
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
54 mins
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
68 mins
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
40 mins
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
Open in App
Solution

The correct option is D 40 mins
If a reaction is 60% complete, 40% remains and if it is 84% complete, 16% remains.

For a first order reaction:
k=2.30320log10040=2.303tlog10016

flag
Suggest Corrections
thumbs-up
6
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Integrated Rate Equations
CHEMISTRY
Watch in App
Join BYJU'S Learning Program
CrossIcon