1.Write a molecular equation for the precipitation reaction (if any) that occurs
ID: 711256 • Letter: 1
Question
1.Write a molecular equation for the precipitation reaction (if any) that occurs when the following solutions are mixed. If no reaction occurs, write noreaction .
a. lithium sulfate and strontium chloride
Express your answer as a chemical equation. Enter noreaction if no precipitate is formed. Identify all of the phases in your answer.
b. potassium bromide and calcium sulfide
Express your answer as a chemical equation. Enter noreaction if no precipitate is formed. Identify all of the phases in your answer.
c. chromium(III) nitrate and potassium phosphate
Express your answer as a chemical equation. Enter noreaction if no precipitate is formed. Identify all of the phases in your answer.
Explanation / Answer
a) SrCl2 (aq) + Li2SO4 (aq) -----> SrSO4 (s) + 2 LiCl (aq)
b) no reaction
( 2 KBr (aq) + CaS (aq) ---> K2S (aq) + CaBr2 (aq), no precipitate formed )
c) Cr(NO3)3 (aq) + K3PO4 (aq) ----> CrPO4 (s) + 3 KNO3 (aq)
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