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电解原理与化学实验联系紧密,且应用形式多样.下面将其在化学实验中的常见题型归类分析如下,供参考.一、探究电解原理例1如图1所示,直流电源电解稀Na2SO4水溶液的装置.通电后在石墨电极a和b附近分别滴加几滴石蕊溶液.下列实验现象描述正确的是()(A)逸出气体的体积,a电极的小于b电极的(B)一电极逸出无味气体,另一电极
Electrolysis principle and chemical experiments are closely linked, and the application of various forms. The following chemical analysis of common problems in the classification analysis is as follows, for reference. First, explore the principle of electrolysis Example 1 As shown in Figure 1, the DC power electrolysis dilute Na2SO4 Aqueous solution of the device after electrifying the graphite electrodes a and b were dropped a few drops of litmus solution respectively The following experimental phenomenon is described correctly () (A) the volume of gas evacuation, a electrode less than the b electrode (B) One electrode escapes the odorless gas, the other electrode