JEE Mains · Chemistry · STD 12 - 6. Haloalkanes and Haloarenes
Given below are two statements:
Statement I: Due to increase in van der Waals forces, the order of boiling points is CH\(_3\)CH\(_2\)CH\(_2\)I > CH\(_3\)CH\(_2\)I > CH\(_3\)I.
Statement II: As para-dichlorobenzene is more symmetric, its melting point is higher than ortho-dichlorobenzene, however its boiling point is lower than ortho-dichlorobenzene.
In the light of the above statements, choose the correct answer from the options given below:
- A Both Statement I and Statement II are true
- B Both Statement I and Statement II are false
- C Statement I is true but Statement II is false
- D Statement I is false but Statement II is true
Answer & Solution
Correct Answer
(A) Both Statement I and Statement II are true
Step-by-step Solution
Detailed explanation
Statement I is true because as the size of the alkyl group increases, the molecular mass and surface area increase. This leads to an increase in the magnitude of van der Waals forces, which in turn increases the boiling point. Thus, the correct order of boiling points is…
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