18. For the reaction given below, 2.00 moles of A and 3.00 moles of B are placed in a 6.00-L container. $$ \mathrm {A} (\mathrm {g}) + 2 \mathrm {B} (\mathrm {g}) \rightleftharpoons \mathrm {C} (\mathrm {g}) $$ At equilibrium, the concentration of A is $0.261\mathrm{mol / L}$ . What is the concentration of B at equilibrium?
(A)0.261 mol/L
(B)0.355 mol/L
(C)0.500 mol/L
(D)0.522 mol/L

答案:登入後查看
統計: 尚無統計資料