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Posted: **Wed Jul 06, 2022 11:02 am**

: B C D 2 The Following Low Resolution Mass Spectra Was Obtained By Analysing A Pure Sample An Unknow Compound Add Th 1 (24.94 KiB) Viewed 18 times

: B C D 2 The Following Low Resolution Mass Spectra Was Obtained By Analysing A Pure Sample An Unknow Compound Add Th 2 (22.73 KiB) Viewed 18 times

b) c) d) 2. The following low resolution mass spectra was obtained by analysing a pure sample an unknow compound. Add the missing axis labels (a & b) and identify the fragments c), d). Use this information to help identify what the chemical formula is? of this compound [5] Chemical formula: 100- 88 12 70 g ☎ 22 22 2 30 20 10 15 10 20 29 30 d) 43 40 50 A water sample b) 60 H 70 100 85 BO 90 100
SECTION B (2 Long answer multipart questions. Each question is worth 10 marks) (Answer all questions) 3. Analysis by HPLC-ESI-HRTOFMS a) HPLC is well suited to analysing mixtures of non volatile chemicals. Describe how the instrument works giving specific details on the chromatography achieves separation of analytes of interest [2] b) ESI is commonly paired with HPLC, describe how this lonisation source works (4)