Question 3 The following compound is carboxylic acid that contain a bromine , with the formula C4H702B.. The peak at 10.97ppm was moved onto the chart (which runs only from 0-8 ppm) for clarity.Give its structure and assign the chemical shift values. 200 升NMR 60 MHZ Integral=3 CalH O,Br Trtegral = 1 Integral = 1 Integral =2 3.0 2.0 1.0 O PPM 8.0 7.0 6.0 5.0 4.0

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Mass Spectrometry

This process is an instrumental method in which a sample is changed to fast moving positive ions by electron bombardment. The charged particles vary due to their different mass to charge ratio and are estimated with the help of this difference. It is also called mass spectroscopy.