Chemical Kinetics(11th And 12th > Chemistry ) Questions and Answers
Explanation:-
Answer: Option B. -> r=k[A]3:
B
A quick way to solve this would be to look at rows one and two. Straight away you can tell that rate does not depend on [B]
Explanation:-
Answer: Option B. -> 0.39 g:
B
One hour 36 minutes, i.e., 96 minutes is 8 half lives
Hence the amount left over is 10028=100256=0.39g
Explanation:-
Answer: Option C. -> 7.5 hours:
C
Each half life would reduce the concentration to half of its original value. So, 99.9% completion takes place in 10 half-lives. Remember 210=1024 and 1/1024≈0.001
Hence time taken = 45 × 10 minutes = 450 minutes = 7.5 hours.
Explanation:-
Answer: Option D. -> CH3COOCH3+NaOH→CH3COONa+CH3OH:
D
Choices (a) and (c) are photochemical reaction of zero order. Choice (b) is first order reaction. In choice (d), rate of reaction depends on 1st power of CH3COOCH3 and NaOH both.