Molecular formula: shows actual number of atoms in a molecule
Empirical formula: shows the simplest ratio of atoms in a compound
General formula: shows relationship of homologous series, is an equation to calculate the number of atoms. (e.g. alkanes is CnH2n+2, alkenes is CnH2n)
Structural formula: shows how atoms in a molecule are joined together
Displayed formula: full structural formula, shows all bonds in a molecule as individual lines
These are different formulas for Butane:
Displayed formula:
Structural formula: CH₃ – CH₂ – CH₂ – CH₃
Molecular formula: C₄H₁₀
Empirical formula: C₂H₅
General formula: Because it is an alkane, the general formula is CnH2n+2.
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Syllabus Points
Organic Chemistry: 4.1 know that a hydrocarbon is a compound of hydrogen and carbon only 4.2 understand how to represent organic m...
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Displayed formula : type of structural formula and shows all the bonds in the molecule as individual lines, where each line represents a pa...
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Process: - Crude oil is separated by fractional distillation. - Crude oil is heated and oil evaporates. - It then goes into the tower. A...
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Organic Chemistry: 4.1 know that a hydrocarbon is a compound of hydrogen and carbon only 4.2 understand how to represent organic m...
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