SME
Organic Chemistry I
Structure and nomenclature
Use this for “Name the alkane CH₃CH(CH₃)CH₂CH(CH₃)CH₃.”
Put in order
Put the steps for naming CH₃CH(CH₃)CH(CH₂CH₃)CH₂CH₂CH₃ in order.
1
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2
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3
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4
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5
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Assumptions
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The parent is the longest carbon chain; if two chains are equally long, it is the one with more branches.
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A branch is named from its carbons with -yl: one carbon is methyl, two ethyl, three propyl.
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Two or more of the same branch take di-, tri- or tetra-, with one number for each: 2,4-dimethyl.
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Numbers are separated by commas, and a number is joined to a word by a hyphen.
Topic check
See what you know: 5 questions on this topic
New questions each time. Pass to mark it complete.
More problem types
Rings and π bonds from a formula
Use this for “A compound is C₅H₇N. How many rings and π bonds can it have?”
Which way an acid–base reaction lies
Use this for “Does hydroxide take the proton from phenol (pKₐ 9.95)? Water’s pKₐ is 15.7. Find K.”
The name’s ending from the functional group
Use this for “Name HOCH₂CH₂COOH. Which group gives the ending, and which becomes a prefix?”
Acids from strongest to weakest
Use this for “Rank phenol, water, ethyne and ammonia from the strongest acid to the weakest.”