Experiment 4

Experiment 4 - Experiment 4 The Alkaline Earths and the...

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Experiment 4: The Alkaline Earths and the Halogens: Two Families in the Periodic Table Joe Smith
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1. Purpose : To determine the elements present in an alkaline earth halide based on the reactions of known halogen and halide ions with other known halogen and halide ions. 2. Procedure : The procedure was taken directly from the ChemLab book, and the procedure from part C is further described in the discussion section. 3. Data and Observations : Part A: 1 M Na 2 CO 3 1M H 2 SO 4 .25 M (NH 4 ) 2 C 2 O 4 1 M K 2 CrO 4 1 M HC 2 H 3 O 2 Ca(NO 3 ) 2 White precipitate settles out Clear Cloudy White Precipitate Clear Yellow Ba(NO 3 ) 2 White precipitate settles out White precipitate settles out Cloudy White precipitate Cloudy Yellow Precipitate Orange Liquid Mg(NO 3 ) 2 White precipitate Cloudy Clear Clear Clear Yellow Sr(NO 3 ) 2 White precipitate settles out White precipitate settles out Very Cloudy White precipitate Negligible amount of yellow precipitate Yellow liquid Part B: Bromine Water + TCE: Separates into 3 layers – Dark red, Yellow (bubbly), Dark red
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Experiment 4 - Experiment 4 The Alkaline Earths and the...

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