在一密闭容器中充入2molA和1molB发生如下反应:2A(g)+B(g) xC(g),达到平衡

在一密闭容器中充入2molA和1molB发生如下反应:2A(g)+B(g) xC(g),达到平衡后,C的体积分是为W%;若维持容积体积和温度不变,按起始物质的量A:0.6mol B:0.3mol C:1.4mol充入容器后,C的体积分数仍为W%,则x的值为  (   )

A、只能为2        B、只能为3        C、可能为2,也可能为3     D、无法确定

答案

C


解析:

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