Question

3) If 50% of a first order reaction is completed in 60 minutes, 75% of the same
reaction would complete in
c) 120 min
b) 30 min
a) 90 min
d)180 min​

Answer 1

Answer:

120 minutes

Explanation:

after reduce to 50 percent

now it's 50%of 50 is 25 %

so it will take 60 minutes more

hence the answer is 120 minutes