问答题
A certain reaction, A+B → C, is first order with respect to each reactant, with k = 5.0 × 10-3M-1s-1. Calculate the concentration of A remaining after 100 s if the initial concentration of A was 0. 100 M and that of B was 6.00 M. State any approximation made in obtaining your result.
【正确答案】Since the concentration of the two reactants start equal and remain equal throughout the reaction, the reaction can be treated as a simple second order reaction. I/[A]=kt+1/[A0]=1.0×10-2L·mol-1·s-1(100s)+1L/0. 100mol =11L/mol [A]=0.091M