WebFeb 8, 2024 · Since the half life is the same regardless of the concentration, this tells us that this is a first order reaction. Since it is a first order reaction, we can write t1/2 = ln 2/k = 0.693/2. 187s = 0.693/k. k = 0.693/187s. k = 3.7x10-3 s-1 WebMar 6, 2024 · 10.0 0.631 . 15.0 0.501 . 20.0 0.398 . 25.0 0.316. Half life for this reaction? Half-life is the time required for a quantity to reduce to half of its initial value. So we just need to look up the values in the table and find how much time for the intial concentation to be reduced to half of its initail value.
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