Question

A first order reaction is 75% completed in 100 min. How long will it take for it's 87.5% completion
(1) 20 min
(2) 33 min
(3) 15 min
(4) 200 min
(3) 175 min
(1) 125 min
(2) 150 min
​

Answer 1

Answer:

for 75% completion it needs 2half lifes

so from the question half life is 50minutes

for 87.5%completion it needs 3half lifes so time taken will be 3×50=150min

PLZ MARK AS BRIANLIESY,FOLLOW ME AND THX FOR THE SUPERB QUESTION

Answer 2

Answer:

bro/sis ur answer is

(2) 150 min