Identification: Precipitation reaction using sodium hexanitrocobaltate(III)

Identification using precipitation reactions: Test using sodium hexanitrocobaltate(III)

Consider which conclusions about the unknown can be drawn form this test

In cold acetic acid hexanitrocobaltate(III)ions form a yellow precipitate with potassium ions. Rubidium, cæsium, thallium, and ammonium ioner allso gives such a yellow precipitate under the same conditions.