1. Consider the following molecules

Which of the following options correctly describes Molecule 1 and Molecule 2?

Solution

2. Which one of the following statements is correct?
A. Pentane has a higher flashpoint than octane.
B. The flashpoint of all the structural isomers of C₄H₁₀O are equal.
C. The higher the flashpoint of a compound, the higher its fire risk.
D. The flashpoint of all the optical isomers of 3-methyl hexane are equal.

Solution

3. A reaction pathway beginning with 1-bromopentane is shown below.

a. Draw the structural formula for an isomer of 1-bromopentane that contains a chiral carbon and circle this chiral carbon.

Solution

b. i. Write a balanced equation for the reaction that will produce
pentan-1-ol from 1-bromopentane and a sodium salt.

Solution

ii. Calculate the atom economy in the production of pentan-1-ol from
1-bromopentane and a sodium salt.

Solution

c. Pentan-1-ol is fully oxidised to Compound S. Write the IUPAC name of Compound S in the box provided.

Solution

d. In an alternative reaction pathway, pentanamide can be formed from 1-bromopentane. Draw the skeletal formula for pentanamide.

Solution