题目

一级对峙反应 A leftharpoons B 的 k_1 = 10 , (min)^-1, k_(-1) = 30 , (min)^-1，且 c_(A0) = 1.0 , (mol) cdot (dm)^-3, c_(B0) = 0。反应平衡时，物质A和B的浓度分别为( ) (mol) cdot (dm)^-3。A. c_A = 0.75, c_B = 0.25B. c_A = 0.25, c_B = 0.75C. c_A = 0.50, c_B = 0.50

一级对峙反应 $A \rightleftharpoons B$ 的 $k_1 = 10 \, \text{min}^{-1}$, $k_{-1} = 30 \, \text{min}^{-1}$，且 $c_{A0} = 1.0 \, \text{mol} \cdot \text{dm}^{-3}$, $c_{B0} = 0$。反应平衡时，物质A和B的浓度分别为( ) $\text{mol} \cdot \text{dm}^{-3}$。

A. $c_A = 0.75, c_B = 0.25$

B. $c_A = 0.25, c_B = 0.75$

C. $c_A = 0.50, c_B = 0.50$

题目解答

答案

A. $c_A = 0.75, c_B = 0.25$