A first order reaction takes 40 minutes for 20 % decomposition calculate half Life
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Answer:
t1/2 = 120min (2Hour)
See attachment
My camera not working
Ao = 100
At = 80
kt = 2.3log A°/At
K = 2.3 × 0.1/40
t1/2 = 2.3 × 0.3/k
put Value of K
t1/2 = 120min
sorry for wait
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