Predicting precipitation reactions

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Presentation transcript:

Predicting precipitation reactions

Ionic reactions of two solutions are double replacement reactions The ions switch partners in a double replacement reaction. Ba(ClO3)2 + Ag2SO4  BaSO4 + AgClO3 barium chlorate + silver I sulfate barium sulfate + silver I chlorate (we are not balancing yet)

Example Calcium Nitrate and Potassium Phosphate Ca(NO3)2 + K3PO4  ? It helps to say the names of the ionic compounds Switch partners Calcium Phosphate and Potassium Nitrate Ca3(PO4)2 + KNO3 What ions are these ions? Ca(NO3)2 + K3PO4  Ca3(PO4)2 + KNO3

Full Molecular Equation and Net Ionic Equation Ca(NO3)2 + K3PO4  Ca3(PO4)2 + KNO3 This is the full molecular equation. Write the net ionic equation for this reaction First determine what is soluble and what is insoluble 3 Ca2+ + 2 PO43-  Ca3(PO4)2

DO NOT!!!!! It helps to say the name of the compound because you have to write the appropriate ionic formula. A common mistake is to try and carry the subscript over from the reactant side Ca(NO3)2 + K3PO4  Ca PO4 + K3(NO3)2 The charges don’t cancel out!!!!!

Predict the full molecular and net ionic equation between Copper II acetate and lithium sulfite Ammonium oxalate and cobalt II chloride Aluminum nitrate and sodium carbonate Hydrochloric acid and silver I nitrate

Homework Write the full molecular and net ionic equation for Potassium silicate and iron III nitrate