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March 29, 2015

Homework Help: Chemistry

Posted by Jennifer on Monday, April 1, 2013 at 9:45pm.

I am so overwhelmed. can somebody please help me?
Consider a solution that is 0.022 M in Fe^2+ and 0.014 in Mg^2+

A) if K2CO3 is to selectively precipitate one of the cations while leaving the other cation in solution, which cation will precipitate first?

B) What minimum concentration of K2CO3 is required to cause the precipitate of the cation that precipitates first?

C) What is the remaining concentration of the cation that precipitates first, when the other cation just began to precipitate.

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