Question 2 (a) The infrared spectra of Acetone, Benzaldehyde and Butanol are shown below. Match the spectrum with the name of compound. 1. (3 marks) II. 11 (3 marks) my (3 marks) (b) Aspirin (Acetylsalicylic Acid) is a product from the reaction of Salicylic Acid and Acetic Anhydride. OH OH OH + OH Salicylic acid Acetic anhydride Acetyl salicylic acid Acetic acid CHO, C.H.O. C.H.O. CHO, A student was synthesizing a batch of Aspirin in the laboratory and was told to confirm if the batch is pure and free from impurities. Discuss if the Infra-red spectrometry is suitable to check if the batch of Aspirin is pure. Support your answer with reasons. ( 6 marks) (c) The column of the gas chromatograph can be set by either isothermal temperature or temperature programming. 1. Define isothermal temperature and temperature programming. (4 marks) II. A sample containing 6 components of boiling points ranging from 65C to 145C was injected into the gas chromatograph for analysis. Explain, with reasons, whether isothermal temperature or temperature programming should be used. (6 marks )