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The process of fractional distillation is used to separate crude oil into different fractions - HSC - SSCE Chemistry - Question 16 - 2008 - Paper 1
Question 16
The process of fractional distillation is used to separate crude oil into different fractions. One of the compounds obtained from fractional distillation is C_{10}H_... show full transcript
Worked Solution & Example Answer:The process of fractional distillation is used to separate crude oil into different fractions - HSC - SSCE Chemistry - Question 16 - 2008 - Paper 1
Step 1
Step 2
Using examples from your first-hand investigation, explain how you distinguished between these two series of compounds. Include a relevant equation in your answer.
Answer
To distinguish between alkanes (e.g., C_{8}H_{18}) and alkenes (e.g., C_{2}H_{4}), one can use the reaction with bromine water. Alkanes do not decolorize bromine water, while alkenes do. This is due to the presence of a carbon-carbon double bond in alkenes.
The reaction can be represented as:
C_{2}H_{4} + Br_{2} \rightarrow C_{2}H_{4}Br_{2}
This shows the addition reaction characteristic of alkenes.