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Time for half change for a first order reaction is 25 minutes |
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Answer» Answer is 166.16 mins. Explanation: we have the relation between the half life and the rate constant as half life t1/2=.693/k k is the rate constant or k=.693/t1/2 =.693/25 min-1 =2.772*10-2 min-1 time required for 25% completion k=2.303/t x log (initial conc/final conc) 2.772*10-2=2.303/t x log (100/1) t=166.16 min |
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