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Petrodiesel is made up of a number of different molecules, including C₁₂H₂₆ - VCE - SSCE Chemistry - Question 25 - 2020 - Paper 1
Question 25
Petrodiesel is made up of a number of different molecules, including C₁₂H₂₆. Biodiesel often contains C₁₁H₂O₂. When comparing C₁₂H₂₆ and C₁₁H₂O₂, which one of the fo... show full transcript
Worked Solution & Example Answer:Petrodiesel is made up of a number of different molecules, including C₁₂H₂₆ - VCE - SSCE Chemistry - Question 25 - 2020 - Paper 1
Step 1
B. C₁₂H₂₆ is less hygroscopic as it has only dispersion forces between the molecules.
Answer
C₁₂H₂₆, being a hydrocarbon, primarily interacts through dispersion forces which makes it less hygroscopic compared to C₁₁H₂O₂, which can form hydrogen bonds due to the presence of oxygen. In general, larger molecules with more significant intermolecular forces exhibit lower hygroscopicity, making statement B the correct choice.