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July 3, 2015

Homework Help: Chemistry

Posted by sh on Friday, March 5, 2010 at 8:31pm.

Consider the following equilibrium:
CaCO3(s)<->Ca 2+(aq) + CO3 2-(aq)

Which of the following reagents, when added to the equilibrium system, would cause more CaCO3 to dissolve?

a)KNO3(s), can't be this, NO3 is soluble with all negative ions
b)CaCO3(s), adding more CaCO3 won't cause it to dissolve more
c)H2C2O4(s)
d)Na2CO3(s)

The answer is not d because it will make more CaCO3(s)? So the answer is c.

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