r和A的濃度成正比.0.25是1的1/4,所以是經(jīng)過了兩個half time.所以half time是30min.t(1/2)=ln2/k.
當你算出k的時候,r=k[A],帶initial的就好了.
for the first-order reaction A→products,the initial rate is 1×10^-3mol·dm^-3·min^-1,the rate is 0.25×10^-3mol·dm^-3·min^
for the first-order reaction A→products,the initial rate is 1×10^-3mol·dm^-3·min^-1,the rate is 0.25×10^-3mol·dm^-3·min^-1 after 1h.calculate k,t的2分之1 and initial concentration C（a,0下標）?
英語人氣：891 ℃時間：2020-08-15 11:48:36
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