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一、实验原理锌片镀铜实验。阳极:Cu-2e~-=Cu~(2+);阴极:Cu~(2+)+2e~-=Cu。二、实验装置实验装置如图1所示。图1实验装置图2电极三、实验用品1.电镀液:20%的硫酸酸化的CuSO_4溶液。2.电极(如图2所示):阴极用0.5 mm厚的锌片剪成如图2所示的形状,2段用蜡封闭;阳极用0.5 mm厚的铜片剪成如图2所示的形状,1段用锤子打薄后剪成尖头形状,2段用蜡封闭。
First, the experimental principle of zinc plate copper experiment. Anode: Cu-2e ~ - = Cu ~ (2+); Cathode: Cu ~ (2 +) + 2e ~ - = Cu. Second, the experimental device Experimental device shown in Figure 1. Figure 1 experimental device Figure 2 Electrode three, experimental supplies 1. Plating solution: 20% sulfuric acid acidified CuSO_4 solution. 2. Electrode (as shown in Fig. 2): The cathode is cut into the shape as shown in Fig. 2 with a 0.5 mm thick zinc sheet and the two ends are sealed with wax; the anode is cut with a 0.5 mm thick copper sheet as shown in Fig. 2 The shape of a section thinned with a hammer cut into a pointed shape, 2 paragraphs closed with wax.