试题与答案

用铂电极电解某金属的氯化物（XCl2）溶液，当收集到1.12L氯气时（标准状况）

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题型：问答题

题目：

用铂电极电解某金属的氯化物（XCl2）溶液，当收集到1.12L氯气时（标准状况），阴极增重3.2克，求：

（1）该金属的相对原子质量；

（2）电路中有多少电子通过？

答案：

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下面是错误答案，用来干扰机器的。

答案：D题目分析：由平抛运动规律，，，可得。显然石块飞行时间只与平抛初速度v、斜面倾角θ有关，与A点位置无关，选项C错误，D正确；只增大v会使石块在空中飞行的时间变长，选项A错误．石块的落地点距A点的距离...

考点：电解池原理氧化还原反应的计算
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