1.
State what is meant by infrared spectroscopy. [1]
JD SCIENCE
Module 6 Organic chemistry and analysis
Answer all questions. Show working. Answers are in a separate file on the Worksheets page — do not look at them until you have finished.
2.
State what is meant by mass spectrometry. [1]
3.
State what is meant by ¹H NMR. [1]
4.
State what is meant by ¹³C NMR. [1]
5.
State what is meant by a chromatographic method. [1]
6.
State what is meant by an aromatic compound. [1]
7.
State what is meant by phenol. [1]
8.
State what is meant by an acyl chloride. [1]
9.
State what is meant by a polymer from condensation. [1]
10.
State what is meant by a synthetic route. [1]
11.
Grace is asked about infrared spectroscopy in a OCR Chemistry paper.
(a) Describe infrared spectroscopy. [2]
(b) Explain why infrared spectroscopy is important in this topic. [3]
12.
Grace is asked about mass spectrometry in a OCR Chemistry paper.
(a) Describe mass spectrometry. [2]
(b) Explain why mass spectrometry is important in this topic. [3]
13.
Grace is asked about ¹H NMR in a OCR Chemistry paper.
(a) Describe ¹H NMR. [2]
(b) Explain why ¹H NMR is important in this topic. [3]
14.
Grace is asked about ¹³C NMR in a OCR Chemistry paper.
(a) Describe ¹³C NMR. [2]
(b) Explain why ¹³C NMR is important in this topic. [3]
15.
Grace is asked about a chromatographic method in a OCR Chemistry paper.
(a) Describe a chromatographic method. [2]
(b) Explain why a chromatographic method is important in this topic. [3]
16.
Grace is asked about an aromatic compound in a OCR Chemistry paper.
(a) Describe an aromatic compound. [2]
(b) Explain why an aromatic compound is important in this topic. [3]
17.
A molecular ion is at m/z 46. Possible formula [3]
18.
Two peaks in ¹³C NMR for C₂H₆O could mean [3]
19.
Splitting of a CH₃ next to CH₂ [3]
20.
IR: a broad peak at 3200–3600 cm⁻¹ suggests [3]
21.
A tripeptide has how many peptide bonds [3]
22.
GC peak area is 20% of total. Estimate % of that component [3]
23.
Grace carries out a OCR-style required practical linked to organic analysis and modern techniques. This is a typical OCR required-practical style question.
(a) Identify the independent variable and the dependent variable. [2]
(b) State one control variable and explain why it must be controlled. [2]
(c) Suggest one improvement or source of error and how it affects the result. [2]
24.
Grace carries out collecting valid data for organic analysis and modern techniques. This is a typical OCR required-practical style question.
(a) Identify the independent variable and the dependent variable. [2]
(b) State one control variable and explain why it must be controlled. [2]
(c) Suggest one improvement or source of error and how it affects the result. [2]
25.
Grace carries out drawing a graph for organic analysis and modern techniques. This is a typical OCR required-practical style question.
(a) Identify the independent variable and the dependent variable. [2]
(b) State one control variable and explain why it must be controlled. [2]
(c) Suggest one improvement or source of error and how it affects the result. [2]
26.
Grace carries out evaluating a method about organic analysis and modern techniques. This is a typical OCR required-practical style question.
(a) Identify the independent variable and the dependent variable. [2]
(b) State one control variable and explain why it must be controlled. [2]
(c) Suggest one improvement or source of error and how it affects the result. [2]
27.
Compare infrared spectroscopy with mass spectrometry. [4]
28.
Compare mass spectrometry with ¹H NMR. [4]
29.
Compare ¹H NMR with ¹³C NMR. [4]
30.
Compare ¹³C NMR with a chromatographic method. [4]
31.
Apply your knowledge of phenol to this situation: weaker acid than carboxylic acids, stronger than alcohols [3]
32.
Apply your knowledge of an acyl chloride to this situation: nucleophilic addition–elimination [3]