1. Comment on the suitability of running the infrared spectrum under each of the

Question

1. Comment on the suitability of running the infrared spectrum under each of the following conditions. IF there is a problem with the conditions given, provide a suitable alternative method. (a) A neat spectrum of liquid with a boiling point of 150 degrees celcius is determined using salt plates. (b) A neat spectrum of a liquid with a boiling point of 35 degrees celcius is determined using salt plates. (c) A KBr pellet is prepared with a compound that melts at 200 degrees celcius. (d) A KBr pellet is prepared with a compound that melts at 30 degrees celcius. (e) A solid aliphatic hydrocarbon compound is determined as a Nujol mull. (f) Silver chloride plates are used to determine the spectrum of aniline. (g) Sodium chloride plates are selected to run the spectrum of a compound that contains some water.

Explanation / Answer

(e) A solid aliphatic hydrocarbon compound is determined as a Nujol mull. because of solvent nature of C-H bond

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