Chem 112 Pre-Lab Quiz

The oxidation state of iron in K3[Fe(C2O4)3]·3H2O is:

+3

In the preparation of K3[Fe(C2O4)3]·3H2O , the Fe2+ is oxidized to Fe3+ by:

Hydrogen Peroxide

During the early stages of the synthesis it is important to stir the mixture continuously so as to:

prevent the solution from bumping

Alcohol is added in order to:

make K3[Fe(C2O4)3]·3H2O less soluble

To facilitate precipitation of K3[Fe(C2O4)3]·3H2O the procedure calls for placing the green solution in an ice bath for:

20 minutes

Conversion of the ferrous ion to the ferric ion is accomplished by a(n):

redox reaction

The object of this experiment is to:

synthesize an iron coordination complex

In coordination complexes the charge on the metal is indicated by __________ in parenthesis

Roman Numerals

The yellow precipitate that forms in the early stages of the synthesis is:

FeC2O4

The number of potassium ions in the complex to be synthesized is:

3

The K3[Fe(C2O4)3]·3H2O is finally isolated by:

vacuum filtration

In writing up this experiment you should:

record the quantities that you actually used

The formation of a brown precipitate during the course of the synthesis is due to:

Fe(OH)3(s)