1. Balance the following reactions then tell which are metathesis (double replac
ID: 558760 • Letter: 1
Question
1. Balance the following reactions then tell which are metathesis (double replacement) reactions a) Caco, + 2HNO3 Ca(NO3)2 + CO2 + H2O b) BaCl2 + Na2SO4 BaSO4 + Nacl c) Pb(NO3)2 + HCl PbCl2 + HNO3 d) AgNO3 Zn Zn(NO3)2 + Ag 2. Write net ionic equations for a, b, and d in Q. 1 above. 3. A solution was prepared by dissolving 1.564 g of NaCI and 2.765 g of KCI in some water and diluting to exactly 250 mL in a graduated flask. What is the molarity of Na", K' and Cl ions in the solution? 4. Suppose you have a solution that might contain Al, Ca", Ag', and Zn2" ions. Addition of HCI gave a white precipitate. After filtering off the precipitate, potassium sulfate was added to the filtrate resulting in a white precipitate, which was again filtered off. When a large amount of KOH was added to the filtrate, no precipitate was formed. Which cations are present in the solution?Explanation / Answer
1. a) CaCO3 + 2HNO3 -----> Ca(NO3)2 + CO2 + H2O (single replacement)
b) BaCl2 + Na2SO4 ------> BaSO4 + 2 NaCl (double replacement)
c) Pb(NO3)2 + 2 HCl ------> PbCl2 + 2 HNO3 (double replacement)
d) Zn + 2 AgNO3 -----> 2 Ag + Zn(NO3)2 (single replacement)
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