1
Q
Test for primary/secondary alcohol + result
A
- Add acidified potassium dichromate (K2Cr2O7)
- Orange to green (Cr3+)
2
Q
Fehling’s test for aldehydes/ketones
A
Aldehydes = blue to brick red precipitate
Ketones remain blue
3
Q
How do you make Tollens reagent? (3)
A
- Silver nitrate solution
- Drops of NaOH
- Drops of dilute ammonia
4
Q
Tollens reagent test
A
Tollens + water bath
Aldehyde = silver mirror
5
Q
Test for alkenes
A
Bromine water turns orange to colourless
6
Q
Test for carboxylic acids + result
A
- React with solid sodium carbonate
- Produces a gas that turns lime water cloudy (CO2)
7
Q
What is the last peak on a mass spectrometry graph?
A
Molecular ion peak
8
Q
What is the fingerprint region?
A
- Unique to all compounds
- Compare the IR spectra against a database of known pure compounds to identify the compound.
9
Q
Greenhouse gases (3)
A
Carbon dioxide, methane, water vapor
10
Q
3 Main ways of distinguishing between two compounds
A
- Boiling points (Hydrogen bonding vs dipole-dipole)
- NMR (peaks at ___PPM)
- IR (C=O bond = 1680-1750 cm-1)
11
Q
Tests for halides + results
A
Silver nitrate
Chloride - white ppt
Bromide - cream ppt
Iodide - yellow ppt
Chemistry A-Level Paper 2
flashcards
Decks in class (19)
# Cards
-
3.3.1 - Introduction to organic chemistry10
-
3.3.2 - Alkanes10
-
3.3.3 - Halogenoalkanes14
-
3.3.4 - Alkenes15
-
3.3.5 - Alcohols24
-
3.3.6 - Organic analysis11
-
3.3.7 - Optical isomers5
-
3.3.8 Aldehydes and ketones12
-
3.3.15 - NMR spectroscopy10
-
3.1.5 - Kinetics8
-
3.3.16 - Chromatography6
-
3.2.5 - Transition metals25
-
3.2.6 - Reactions of metal ions in aqueous solutions11
-
3.2.4 - Period 3 elements14
-
3.3.11 - Amines16
-
3.3.12 - Polymers7
-
3.3.13 - Amino acids, proteins and DNA16
-
3.3.9 - Carboxylic acids and derivates21
-
3.3.10 - Aromatic chemistry19
