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溶液稀释后测吸光度值求质量怎么算

2025年04月04日 14:21

有1个网友回答

网友（1）：

根据朗伯-比尔定律：A=kc，测出吸光值后可求出浓度c(物质的量浓度)，这个浓度是稀释后溶液的浓度，在乘以稀释倍数就得到原溶液的浓度c1，原溶液的浓度乘以原溶液的体积等于原溶液的物质的量，再乘以溶质的摩尔质量就得到原溶液溶质的质量。即：质量m=c1·V·M

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