Fractional Distillation and Alkanes — OCR GCSE Combined Science B J260
OCR GCSE Combined Science B · J260
Fractional Distillation and Alkanes
What you need to know
Recall that crude oil serves as the primary natural source of hydrocarbons and acts as a critical feedstock for the petrochemical industry.
Explain the deep dependency of modern society on hydrocarbons and recognize the finite nature of global crude oil resources.
Describe and explain the separation of crude oil mixtures through the industrial process of fractional distillation.
Describe crude oil fractions as mixtures predominantly composed of alkane homologous series compounds sharing the general formula CnH2n+2.
Explain the varying temperatures required for changes of state among different fractions using concepts of energy transfer, chemical bond strength, and intermolecular forces.
Deduce the empirical formula of a given compound using relative atomic numbers, representative models, or chemical diagrams.
Apply mathematical computations and standard ratios accurately to determine empirical formulae.
