Empirical,+molecular+&+sturctural+formulas

A full structural formula shows all the atoms and bonds (basically it shows how the atoms are arranged in the molecule). eg: structural formula of butanoic acid 

A condensed structural formula shows the atoms with repeated identical groups put together in brackets (and bonds are omitted) eg: Condensed structural formula of butanoic acid CH 3 CH 2 CH 2 COOH OR CH 3 (CH 2 ) 2 COOH Molecular formula gives the actual number of each type of atom in the molecule. eg: C 4 H 8 O 2  for butanoic acid. <span style="font-family: Tahoma,sans-serif; font-size: 14pt;">Empiriacal formula gives the simplest, whole number ratio of atoms in the molecule C 2 <span style="font-family: Tahoma,sans-serif; font-size: 14pt;">H 4 <span style="font-family: Tahoma,sans-serif; font-size: 14pt;">O

__**<span style="font-family: Tahoma,sans-serif; font-size: 14pt;">Note: **__

<span style="font-family: Tahoma,sans-serif; font-size: 14pt;">An alkyl group (C n <span style="font-family: Tahoma,sans-serif; font-size: 14pt;">H 2n+1 <span style="font-family: Tahoma,sans-serif; font-size: 14pt;">, an alkane with one H removed) can be represented by R. Thus alcohols (having –OH group) can be represented by ROH. <span style="font-family: Tahoma,sans-serif; font-size: 14pt;">A benzene ring can be represented asso that phenol (a benzene ring with an –OH) is represented as <span style="font-family: Tahoma,sans-serif; font-size: 14pt;">HO-

By the end of this lesson you should be able to: __**<span style="color: #0000ff; font-family: 'Palatino Linotype','Book Antiqua',Palatino,serif;">Next up- Structural isomers **__
 * distinguish between empirical, molecular and structural formulas
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