Problem: The accompanying photo shows the reaction between a solution of Cd(NO3)2 and one of Na2S. What ions remain in solution?

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reactant

Cd(NO3)2 → Cd2+ (aq) + 2 NO3- (aq)

Na2S → 2 Na+ (aq) + S2- (aq)


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Problem Details

The accompanying photo shows the reaction between a solution of Cd(NO3)2 and one of Na2S. Liquid from a graduated cylinder is being poured into a beaker containing a liquid, forming a cloud, yellowish precipitate.

What ions remain in solution?

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Complete Ionic Equations concept. You can view video lessons to learn Complete Ionic Equations. Or if you need more Complete Ionic Equations practice, you can also practice Complete Ionic Equations practice problems.

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Based on our data, we think this problem is relevant for Professor Ramoutar's class at GS.