Home › CBSE Class 11 › Chemistry › Alcohols, Phenols and Ethers › Per NCERT §9.2.3 + Table 9.2, isomeric pentanes …
Per NCERT §9.2.3 + Table 9.2, isomeric pentanes (n-pentane, 2-methylbutane, neopentane) have which boiling-point order?
An-pentane > 2-methylbutane > neopentane
BNeopentane > 2-methylbutane > n-pentane
C2-methylbutane > n-pentane > neopentane
DAll equal
Answer & Solution
Correct answer: A. n-pentane > 2-methylbutane > neopentane
NCERT §9.2.3: more branched → more spherical → less surface contact → lower van der Waals → lower b.p. Linear chain has highest.
Related questions
With which two hydrogen halides is the peroxide effect not observed?Addition anti to Markovnikov rule is known as the peroxide or:Who framed the rule for adding HBr to unsymmetrical alkenes, in 1869?An intermediate conformation between eclipsed and staggered is called:Eclipsed and staggered conformations are represented by Newman and:Across all conformations, what stays the same?How many conformations can an alkane have by rotation about single bonds?Spatial arrangements interconverted by rotation about a single bond are called: