,,,simpledistillationisalwaysusedtoseparateliquidMixtureswhichhaveboilingpointsmorethanabout30℃(二元或三元共沸物),,-1℃.Butthatofmixtureisverylarger,,,,,thatmeanstheprocessgoesthroughmanyvaporization-“bottom-to-up”and“left-to-right”-bottomflaskofsuchasizethatisshouldbenomorethanone--overorbump-’-,maintaindistillationatarateof1-2d/
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