DRAFT: This module has unpublished changes.

Set Up:

1. Prepare a fresh set of test tubes for Procedures 1 and 2 by the following:

- Label 4 clean test tubes 1 through 4 and put them in the test tube rack

- Label the pipets to prevent contamination

- Add 4 or 5 drops of Kh2PO4, Na2SO4, NaCl, and NaNO3 to test tubes 1, 2, 3, and 4, respectively

- Add 5 M ammonia to each solution drop by drop until it is basic when tested with litmus paper

2. In a  fifth test tube, prepare the solution as follows:

- Add 10 to 15 drops of the unknown solution which will have some of the anions you are testing for

- Add 5 M ammonia to the unknown solution drop by drop until it is basic when tested with litmus paper

DRAFT: This module has unpublished changes.