Consider the organic molecules in the table below and answer the questions that follow - NSC Technical Sciences - Question 2 - 2022 - Paper 2
Question 2
Consider the organic molecules in the table below and answer the questions that follow.
A | B
---|---
| H
H-C=C-H | H-C-C-
| H
C | D
---|---
CH3CH2CHO | Pro... show full transcript
Worked Solution & Example Answer:Consider the organic molecules in the table below and answer the questions that follow - NSC Technical Sciences - Question 2 - 2022 - Paper 2
Step 1
2.1.1 Saturated
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The hydrocarbon which is saturated is represented by letter E (C4H10). Saturated hydrocarbons have single bonds between carbon atoms.
Step 2
2.1.2 Unsaturated
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The hydrocarbon which is unsaturated is represented by letter F (C4H8). Unsaturated hydrocarbons contain at least one double or triple bond between carbon atoms.
Step 3
2.2 Write down the general formula for a homologous series to which compound F belongs.
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The general formula for the homologous series that compound F belongs to is CnH2n, where n = number of carbon atoms. For compound F, with 4 carbons, the formula would be C4H8.
Step 4
2.3.1 C
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The structural formula for the functional group of compound C (CH3CH2CHO) is:
H
|
H-C-C=O
|
H
This displays the aldehyde functional group (-CHO).
Step 5
2.3.2 D
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The structural formula for the functional group of compound D (Propanone) is:
O
||
H3C-C-CH3
This displays the ketone functional group (-C=O).
Step 6
2.4.1 Give the IUPAC name of compound B.
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The IUPAC name of compound B is Prop-2-ol. This indicates a hydroxyl group (-OH) at the second carbon of a three-carbon alkane.
Step 7
2.4.2 Draw the structural formula of the positional isomer of compound B.
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The structural formula for the positional isomer of compound B (Prop-2-ol) is:
H H
| |
H-C-C-C-H
| |
OH H
Step 8
2.5.1 Define the term polymer.
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A polymer is a large molecule composed of smaller monomer units covalently bonded to each other in a repeating pattern. These larger molecules can have different properties based on their monomer composition.
Step 9
2.5.2 Draw the structural formula of the polymer that can be formed from monomer A.
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The structural formula of the polymer formed from monomer A (which is an alkene) can be represented as follows:
H H H H
| | | |
H-C-C-C-C-H
| | | |
H H H H
Step 10
2.5.3 Give the NAME of the polymer that can be formed from monomer A.
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The polymer that can be formed from monomer A is Polythene (Polyethylene), commonly used in plastic products.
