At room temperature (approximately 20-25 degrees celsius) , which compound is the least soluble and why?

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1 Answer
anor277
Jun 17, 2018

Would it not be the chlorate salt OR the cerium salt....under the given conditions....

Explanation:

We take the #T=25# #""^@C# abscissa on the #"x-scale..."# and we read the corresponding ordinate on the #"y-scale..."#...and these are either #"potassium chlorate"# or #"cerium(III) sulfate"#. Both of these salts exhibit solubilities of approx. #10*g*100*g^-1# #"of water"#...

If you want to win brownie points ask your teacher why the solubility of cerous sulfate DECREASES with increasing temperature....this is a VERY unusual phenomenon, and I bet that your teacher does not give you a satisfactory answer...

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