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 indeed undergo an addition reaction 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 also correct. Propene can polymerize, and some polymerization processes can yield water as a byproduct.
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 not correct. While propene is indeed a gas at room temperature, the forces acting between its molecules are not just weak dispersion forces but include stronger van der Waals forces due to its molecular structure.
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 but less common for propene. The complete combustion of propene does yield water and carbon dioxide.
