铜、银位于周期表中第ⅠB族。铜、硫酸铜、硝酸银、银氨溶液是实验室常用的含铜或银的化学试剂。从废定影液[主要含有
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、
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、
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、
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等微粒]中回收Ag和
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的主要步骤:向该废定影液中加入氢氧化钠调节pH在7.5~8.5之间,然后再加入稍过量
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溶液沉银,过滤、洗涤及干燥,灼烧
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制Ag;滤液中通入
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氧化
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, 用苯萃取分液。下列有关物质的性质与用途具有对应关系的是
- A、铜具有良好导热性,可用作印刷电路板
- B、硫酸铜溶液显酸性,可用作泳池杀菌剂
- C、溴化银呈淡黄色,可用于制作相机胶片
- D、银氨溶液具有弱氧化性,可用于制作银镜