Mod 8 Flashcards
Flame colour Ba2+
Yellow-green
Flame colour Ca2+
Brick red
Flame colour Pb2+
Grey-blue
Flame colour Cu2+
Blue-green
Flame colour Fe2+/3+
Orange-brown
Precipitate colour Ba2+
White
Precipitate colour Ca2+
White
Precipitate colour Mg2+
White
Precipitate colour Pb2+ and exception
White except yellow with Iodine
Precipitate colour Cu2+ with exception
Blue except green with carbonate
Precipitate colour Fe2+
Green (except grey with carbonate)
Precipitate colour Fe3+
Solution is yellow
Either brown or yellow
Precipitate colour Ag
Solution is white
Precipitates are either white or yellow
Identifying an alcohol
Titration methods
Mass spec steps
How does conjugation effect UV vis
More conjugation = longer wavelengths
What is the fingerprint region of the IR spectrum
Fingerprint region (1500 - 666) - Unique spectra for different molecules, allows for identification of models
How does the IR spectrum work
IR absorption corresponds to the vibrational energy levels of the molecule.
What does chlorine look like in a mass spec
2 peaks at 35 and 37 with a 3:1 ratio
What does bromine look like in a mass spec
2 peaks at 79 and 81 with a 1:1 ratio
How does AgCl, AgBr, AgI and Pb react with ammonia?
AgCl is soluble in dilute ammonia
AgBr is soluble in concentrated ammonia
AgI is insoluble in concentrated ammonia
PbCl is insoluble in ammonia
Iron 3+ and Thiosynate (SCN-) colour
Produce blood red [Fe(SCN)]2+
Copper (II) ions with concentrated ammonia
Forms pale blue Cu(OH)2 (s) which dissolves to form deep blue [Cu(NH3)4)2+
