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Which pair is matched WRONGLY? | StemPy Lab
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Which pair is matched WRONGLY?
Chemistry
Hard
High School (9–10)
General
Mixtures and Solutions › Separation of Mixtures
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StemPy Lab
Which pair is matched WRONGLY?
Kerosene from petrol: a separating funnel
The dyes in an ink: chromatography
Salt from sea water: evaporation
Butter from curd: centrifugation
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← A mixture of methanol (boiling point 338 K) and water is distilled. The thermometer stays near 338 K for a long time, and then it rises. What drips into the receiver while it reads 338 K?
Each pair of liquids mixes completely. Which pair needs fractional distillation? →
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Mixtures and Solutions › Separation of Mixtures
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Air has about 78 % nitrogen, 21 % oxygen and 1 % other gases by volume.
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100 mL of a mixture of methanol (boiling point 338 K) and water (373 K) is distilled.
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Simple distillation needs boiling points more than about 25 K apart.
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Created by StemPy LabCreated by StemPy Lab