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好吧问答库 > （高一化学）、在含NaCl和NaBr混合溶液中加入0.1mol⼀LAgNO3溶液350ml,反应后

（高一化学）、在含NaCl和NaBr混合溶液中加入0.1mol⼀LAgNO3溶液350ml,反应后

2025年03月14日 15:19

有1个网友回答

网友（1）：

通过题目已知银离子过量，说明原溶液中Cl离子和Br离子都已经消耗完，那么加入过量盐酸得到的沉淀即为AgCl,从而可以算出Ag离子过量0.015mol
而题目中提供的银离子总量为0.1X0.35=0.035mol,所以原混合溶液中Cl和Br总共为0.02mol
令NaCl为xmol
143.5x+187.77(0.02-x)=3.315
可以算出各自物质的量，从而算出各自的质量

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