问答题
The reaction,A+2B→C+2D,is run three times. In the second run, the initial concentration of A is double that in the first run,and the initial rate of the reaction is double that of the first run. In the third run, the initial concentration of each reactant is double the respective concentrations in the first run,and the initial rate is double that of the first run. What is the order of the reaction with respect to each reactant?
【正确答案】From the first statement it may be deduced that the reaction is first order with respect to A. Since doubling both concentrations causes only a doubling of the rate, which is caused by the doubling of A concentration, the doubling of the B concentration has had no effect on the rate; the rate is zero order with respect to B.