论文部分内容阅读
一、知识梳理1.制取物质.例如用电解饱和食盐水可制取氢气、氯气和烧碱.2.电镀.在金属表面镀上一层铬、锌、镍、铜等,增强金属的抗腐蚀能力和表面硬度,使其更加美观.电镀时,镀件作阴极,镀层金属作阳极,选择含有镀层金属阳离子的盐溶液作为电解质溶液.电镀过程中该电解质溶液浓度保持不变.3.电解精炼铜.以精铜作阴极,粗铜作阳极,以硫酸铜溶液作为电解质溶
First, the knowledge of combing 1. Preparation of substances. For example, electrolysis of saturated brine can be made of hydrogen, chlorine and caustic soda 2. Electroplating on the metal surface coated with a layer of chromium, zinc, nickel, copper, etc., to enhance the corrosion resistance of metals Ability and surface hardness, making it more beautiful. When electroplating, plating for the cathode, the metal coating as the anode, the choice of metal salts containing cations as a solution of the electrolyte solution. The plating process of the electrolyte solution concentration remains unchanged .3 electrolytic refining Copper. To fine copper for the cathode, blister for the anode, copper sulfate solution as electrolyte solution