propane,n butane, n-pentane,isobutane, isopentane, neopentane.Arrange these increasing order of boiling point
Answers
n -pentane >isopentane> neopentane n-butane i>sobutane >propane
bcoz boiling point is directly proportional to molecular weight and inversely proportional to no.of side chains
Answer:
The increasing order of boiling point is
propane < isobutane < n-butane < neopentane < isopentane < n-pentane.
Explanation:
The boiling point of a compound is directly proportional to its surface area and molecular mass. So, among all the given molecules, propane has the least mass and surface area therefore it has the lowest boiling point. Whereas, among n- butane and isobutane, isobutane has lesser surface area compared to butane due to its branched structure. Therefore, isobutane has a lower boiling point than n-butane. Similarly, among isopentane n-pentane and neopentane, neopentane has the least surface area due to its branched structure and weakest van-der wall attraction but isopentane greater surface area and stronger van der wall attraction. So, neopentane has the lower boiling point than isopentane and n-pentane. Therefore, the correct order of increasing boiling point is Propane < isobutane < n-butane < neopentane < isopentane < n-pentane.
#SPJ3