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A zero-order reaction is 25% complete in 30seconds. What time does it take for 50% completion?

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in Chemistry – Class 12 by (188k points)
A zero-order reaction is 25% complete in 30seconds. What time does it take for 50% completion?

(a) 40s

(b) 70s

(c) 50s

(d) 60s

I have been asked this question in class test.

The above asked question is from Chemical Kinetics in portion Chemical Kinetics of Chemistry – Class 12

1 Answer

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Best answer
Correct answer is (d) 60s

The best I can explain: t25% = (1-0.75)/K

K = 0.25/30

t50% = (1 x 30)/(2 x 0.25)

t50% = 15/0.25

t50% = 60s.

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