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Write a molecular equation for the precipitation reaction that occurs (if any) when the following solutions are mixed. If no reaction occurs, write NO REACTION.

• sodium chloride and lead (II)

• acetate potassium sulfate and strontium iodide chromium (III)

• nitrate and sodium phosphate

Verified Answer :

• sodium chloride and lead (II) acetate molecular equation.
Pb(CH3COO)2 + 2 NaCl = PbCl2 + 2 CH3COONa

acetate potassium sulfate and strontium iodide chromium (III)  molecular equation
K2 SO4 (aq) + Sr I2 (aq) = 2 KI (aq) + Sr SO4 (s) 

• nitrate and sodium phosphate molecular equation
Cr(NO3)3 (aq) + Na3PO4 (aq) = 3 NaNO3 (aq) + CrPO4 (s)

Answer: 2NaCl + Pb(C2H3O2))2 ==> 2NaC2H3O2 + PbCl2

K2SO4 + SrT2 ==> 2KI + SrSO4

Cr(NO3)3 + Na3PO4 ==> 3NaNO3 + CrPO4

Explanation:

PbCl2 is precipitated and is insoluble in the solution.

SrSO4 is precipitated and is insoluble in the solution.

CrPO4 is precipitated and is insoluble in the solution.

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