Doc
Brown's Chemistry Clinic
GCE-AS-A2-IB Advanced Level Organic Chemistry Revision
Molecular structure deduction - 3 problems
NMR problem solving with associated data
[you will need tables of nmr chemical shifts and characteristic infrared absorption frequencies (as wavenumber cm-1)
Atomic masses: C = 12, H = 1, O =16
PROBLEM 1
 |
% mass element analysis: 82.76% C, 17.24% H |
| infrared spectrum: | |
| molecular mass: 58 | |
| other data: |
PROBLEM 2
|
% mass element analysis: 54.55% C, 9.09% H, 36.36% O |
| infrared spectrum: sharp strong absorption at 1740-1760 cm-1 | |
| molecular mass: 88 | |
| other data: |
PROBLEM 3
 |
% mass element analysis: 62.07% C, 10.34% H, 27.59% O |
| infrared spectrum: strong sharp absorption at 1700-1730 cm-1; moderate, broad absorption at 2450=3150 cm-1 | |
| molecular mass: 116 | |
| other data: |
try revision* Copyright © Dr W P Brown 2000-2008 All rights reserved including the revision notes pages, quizzes, worksheets etc. * Doc Brown's Chemistry Clinic * www.docbrown.info/ *
|
GCSE-IGCSE-KS4 Science-CHEMISTRY notes & quizzes (~US K12 grades 9-10) |
Advanced Level CHEMISTRY GCE AS A2 IB notes and quizzes (~US K12 grades 11-12) |
All my GCSE-IGCSE Science-CHEMISTRY etc. syllabus help links |
|||||||||
|
|||||||||||
