Which one of the following statements about propene is not correct?
A - VCE - SSCE Chemistry - Question 11 - 2009 - Paper 1
Question 11
Which one of the following statements about propene is not correct?
A. It undergoes an addition reaction with hydrogen to form propane.
B. It undergoes a polymeris... show full transcript
Worked Solution & Example Answer:Which one of the following statements about propene is not correct?
A - VCE - SSCE Chemistry - Question 11 - 2009 - Paper 1
Step 1
A. It undergoes an addition reaction with hydrogen to form propane.
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Answer
This statement is correct. Propene can undergo an addition reaction where it reacts with hydrogen (hydrogenation) to form propane.
Step 2
B. It undergoes a polymerisation reaction expelling water in the process.
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Answer
This statement is incorrect. Propene does not expel water during polymerisation; this type of reaction typically occurs in condensation polymerisation, which involves the formation of water as a by-product.
Step 3
C. Weak dispersion forces act between propene molecules and consequently it is a gas at room temperature.
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Answer
This statement is correct. At room temperature, propene exhibits weak dispersion forces, which explains why it exists as a gas.
Step 4
D. One propene molecule will react with excess oxygen to produce three molecules of water and three molecules of carbon dioxide.
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Answer
This statement is correct. The complete combustion of propene with excess oxygen indeed produces water and carbon dioxide.
