Which of the following is true regarding the boiling point?(a) cannot say(b) n-Octane is greater than isooctane(c) n-Octane is less than isooctane(d) n-Octane is equal to isooctaneI have been asked this question in my homework.I need to ask this question from Hydrocarbons topic in division Hydrocarbons of Chemistry – Class 11

Which of the following is true regarding the boiling point?(a) cannot

1.	Which of the following is true regarding the boiling point?(a) cannot say(b) n-Octane is greater than isooctane(c) n-Octane is less than isooctane(d) n-Octane is equal to isooctaneI have been asked this question in my homework.I need to ask this question from Hydrocarbons topic in division Hydrocarbons of Chemistry – Class 11
Answer» Correct answer is (b) n-Octane is greater than ISOOCTANE For explanation I would say: The boiling POINT of ALKANES decreases on branching and boiling point is directly proportional to the van der walls forces and the van der wall forces are directly proportional to the molecular mass as well as SURFACE area. So we can say that the boiling point of n-Octane is greater than that of isooctane.

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