Question

One of the examples of homologous series is given below.
( H H₂OH )
(X)
( H₂CH₂CH₂OH )

i. Define homologous series. [1]
ii.Find the mass difference between successive member of above homologous series and calculate the molecular mass of X [2]
iii. What is the reason behind the highest boiling point but least solubility of the fourth member in the given series? [2]​

Answer 1

Answer:

I. A homologous series is a family of hydrocarbons with similar chemical properties who share the same general formula. We will look at three hydrocarbon series: alkanes, alkenes and the cycloalkanes. Hydrocarbons are compounds that contain only hydrogen and carbon.

2. term of molecular mass each successive member in a homologous series differ by molecular mass of 14 Dalton by the preceding member. ... There is a difference of one carbon atom and two hydrogen atom between two consecutive members of homologous series that is of one CH2 molecule or three atoms.