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GCSE Combined Science · key term
A tower in which hydrocarbon vapours separate as they rise through a temperature gradient, with hotter conditions at the bottom and cooler conditions at the top.
Used by AQA and OCR
Specification 4.8.1.3 · Paper 3, Paper 4
Revise: Fractional Distillation of Crude OilThe vapours enter a fractionating column, which is hot at the bottom and cooler at the top. This change in temperature with height is called a temperature gradient.
Specification C6.1h · Chemistry Paper 2
A tower used for fractional distillation, with a high temperature at the bottom and a lower temperature at the top.
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The hot mixture enters a fractionating column near the bottom.
