(S)-2-chloropentane has a specific rotation of +34.07°.
(i) Show the structure of (S)-2-chloropentane.
(ii) What is the specific rotation of (R)-2-chloropentane.
(iii) If a sample containing (R)- and (S)- 2-chloropentane has a specific rotation of –12.47°, calculate the percentage composition of the sample.