下列关于化学反应2X +Y ==2Z的叙述，错误的是
侯英超 |
发布日期：2010-05-31 17:14:33
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下列关于化学反应2X +Y ==2Z的叙述，错误的是 A．Z一定是化合物 B．在反应中X 、Y 、Z三种物质的粒子数目比为2：1：2 C．若X和Y的相对分子质量分别为M和N，则Z的相对分子质量为（M+N） D．若ag X完全反应生成bgZ，则同时消耗（b—a）gY |
