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Propanol, C₃H₈O, can undergo reactions to form compounds Y and Z shown in Figure 14 - Edexcel - GCSE Chemistry - Question 10 - 2021 - Paper 1
Question 10
Propanol, C₃H₈O, can undergo reactions to form compounds Y and Z shown in Figure 14. (i) What happens to propanol when it forms compound Y? A. propanol undergoes a... show full transcript
Worked Solution & Example Answer:Propanol, C₃H₈O, can undergo reactions to form compounds Y and Z shown in Figure 14 - Edexcel - GCSE Chemistry - Question 10 - 2021 - Paper 1
Step 1
Step 2
Explain how bromine water can be used to distinguish between compound X and compound Y.
Answer
Bromine water is used to test for the presence of unsaturation in organic compounds. Compound Y, which is likely an alkene due to dehydration, will decolorize bromine water as it reacts with it to form a dibrominated compound. On the other hand, compound X, if it is an alkane or a saturated compound, will not react with bromine water and will retain its color. Thus:
- For compound Y: Decolorization of bromine water indicates the presence of a double bond.
- For compound X: No change in color suggests it is saturated.