7. Terpenes consist of joined isoprene units (2-methylbuta-1,3-diene) - Scottish Highers Chemistry - Question 7 - 2018
Question 7
7. Terpenes consist of joined isoprene units (2-methylbuta-1,3-diene). They are classified by the number of isoprene units in the molecule.
(a) Myrcene and humulene... show full transcript
Worked Solution & Example Answer:7. Terpenes consist of joined isoprene units (2-methylbuta-1,3-diene) - Scottish Highers Chemistry - Question 7 - 2018
Step 1
Circle an isoprene unit on the myrcene structure below.
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Answer
An isoprene unit can be circled in the myrcene structure as follows:
H2C CH3
| |
H2C=C C-CH
| |
CH2 CH
Step 2
Name the class of terpene to which humulene belongs.
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Answer
Humulene belongs to the class of terpenes called sesquiterpene.
Step 3
Calculate the mass of squalene required to produce a batch of 500,000 doses of flu vaccine.
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State the number of moles of hydrogen needed to fully saturate one mole of squalene to produce one mole of squalane.
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Answer
To fully saturate one mole of squalene, 6 moles of hydrogen are needed.
Step 5
Name the type of reaction taking place.
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Answer
The type of reaction taking place is addition.
Step 6
Explain why no reaction takes place.
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Answer
No reaction takes place when terpineol is heated with copper(II) oxide because terpineol is a tertiary alcohol and tertiary alcohols cannot be oxidised.
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