Dr. Beaker has a problem - he stored a rack of five bottles filled with clear co

Question

Dr. Beaker has a problem - he stored a rack of five bottles filled with clear colorless liquids too close to a heat vent and the labels fell off of each of the bottles. He needs your help in order to correctly identify each of the solutions. Below is a list of the solutions:

0.10 M NaOH   0.20 M BaCl2 0.50 M H2SO4   0.10 M AgNO3 0.50 M Na2CO3

The bottles are now labeled " A, B, C, D, and E". Match the letter on the bottle to the correct formula for the solute. You will need to develop your own procedure to solve this chemical puzzle. In solving the chemical puzzle, you will need to familiarize yourself/review/research the following topics: Chemical Reactions involving aqueous solutions, Acid-Base reactions, Solubilities of Ionic Compounds, Identifying Gases and Precipitates

Materials Provided:

pH paper (aka litmus paper),

Phenolphthalein,

5 Unknown solutions (labeled A, B, C, D, and E) ,

Well-plates for mixing

pH paper (aka litmus paper),

Phenolphthalein,

5 Unknown solutions (labeled A, B, C, D, and E) ,

Well-plates for mixing

Explanation / Answer

Ah, cheaters... Yeah, this is one of the FGCU Chemistry professors. We have key phrases scattered throughout this exam that we search for all the time. It's also why we change the exam all the time, too.

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