EXP 3 CHM260.docx - CHM 260 LABORATORY WORK Experiment Number 3 Title Fourier Transform Infrared Spectroscopy(FTIR NAME MUHAMMAD NAZIRUL NAZMI BIN MOHD

EXP 3 CHM260.docx - CHM 260 LABORATORY WORK Experiment...

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CHM 260 LABORATORY WORK Experiment Number: 3 Title: Fourier Transform Infrared Spectroscopy (FTIR) NAME: MUHAMMAD NAZIRUL NAZMI BIN MOHD RAZALI STUDENT NO.:2017265618 GROUP: AS12005-16 DATE OF SUBMISSION 25 OCTOBER 2019 LECTURER’S NAME: MADAM NOOR FAEZAH BINTI MOHD SANI
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CHM 260 LABORATORY WORK Experiment Number: 3 Title: Fourier Transform Infrared Spectroscopy (FTIR) NAME: ABDUL HAKIM BIN MOHD NASIR STUDENT NO.:2017641876 GROUP: AS12005-16 DATE OF SUBMISSION 25 OCTOBER 2019 LECTURER’S NAME: MADAM NOOR FAEZAH BINTI MOHD SANI
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INTRODUCTION Fourier-transform infrared spectroscopy (FTIR) is a technique used to obtain an infrared spectrum of absorption or emission of a solid, liquid or gas. An FTIR spectrometer simultaneously collects high-spectral-resolution data over a wide spectral range. This confers a significant advantage over a dispersive spectrometer, which measures intensity over a narrow range of wavelengths at a time. The term Fourier-transform infrared spectroscopy originates from the fact that a Fourier transform (a mathematical process) is required to convert the raw data into the actual spectrum. OBJECTIVES 1. To prepare the KBr pellet of an organic compound (such as benzoic acid) 2. To carry out a qualitative analysis of an organic compound (such as benzoic acid) using FTIR. 3. To identify IR absorption peaks and the corresponding functional groups of an unknown solid/liquid/powder. APPARATUS Die set Hydraulic press gauge Agate mortar Pestle Spatula Pellet holder Beaker
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CHEMICALS 1. Potassium bromide solid, KBr (IR grade) 2. Benzoic acid 3. Unknown powder PROCEDURE a. (i) The KBr method 1. Benzoic acid and the KBr solid (IR grade) were obtained from the desiccator. 2. The agate mortar and pestle were removed from the desiccator for use to grind the benzoic acid and KBr. 3. 1mg of benzoic acid was taken and ground using agate mortar and pestle until the benzoic acid become very small and shiny. 4. 80mg of KBr was taken and ground using agate mortar and pestle until it becomes powdered.
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