6. (a) What general term is used for compounds, like those shown in the table, that contain only carbon and hydrogen atoms?
(b) Give the IUPAC names for A, C and D - Leaving Cert Chemistry - Question 6 - 2018
Question 6
6.
(a) What general term is used for compounds, like those shown in the table, that contain only carbon and hydrogen atoms?
(b) Give the IUPAC names for A, C an... show full transcript
Worked Solution & Example Answer:6. (a) What general term is used for compounds, like those shown in the table, that contain only carbon and hydrogen atoms?
(b) Give the IUPAC names for A, C and D - Leaving Cert Chemistry - Question 6 - 2018
Step 1
What general term is used for compounds, like those shown in the table, that contain only carbon and hydrogen atoms?
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Answer
The general term for compounds that contain only carbon and hydrogen atoms is hydrocarbons.
Step 2
Give the IUPAC names for A, C and D.
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Answer
The IUPAC names are as follows:
A: methane
C: propene
D: ethyne.
Step 3
To which homologous series:
(i) do both A and B belong?
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Answer
Both A and B belong to the alkanes series.
Step 4
To which homologous series:
(ii) does D belong?
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Answer
D belongs to the alkynes series.
Step 5
Which compound in the table is aromatic?
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Answer
The compound that is aromatic is E (benzene).
Step 6
Write the molecular formula of this compound.
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Answer
The molecular formula for benzene is C₆H₆.
Step 7
Why is this compound not in common use?
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Answer
Benzene is not in common use due to its carcinogenic nature and being classified as toxic, harmful, or dangerous.
Step 8
Which compound in the table, when burned in oxygen, produces a very high temperature flame used for cutting and welding metal?
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Answer
The compound that produces a very high temperature flame when burned in oxygen is D (ethyne).
Step 9
Which compound in the table is produced by anaerobic bacteria decomposing animal waste?
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Answer
The compound produced by anaerobic bacteria decomposing animal waste is A (methane).
Step 10
Why is the concentration of this compound in the atmosphere a cause for concern?
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Answer
The concentration of methane in the atmosphere is a concern due to its contribution to global warming, climate change, and its role as a greenhouse gas.
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