Balance the following reactions then tell which are
metathesis( double replacement) reactions: A) CaCO3 + 2HNO3>Ca(
B)BaCl2+ Na2SO4 >BaSO4+NaCl
D)AgNO3 +Zn>Zn(NO3)2 +Ag
Write net ionic equations for a, b,and d in Q. 1 above.
A solution was prepared by dissolving 1.564g of NaCl and 2.765g of KCl in some water and diluting to exactly 250ml 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 Al3+, Ca2+, Ag+, and Zn2+ ions. Addition of HCl 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?
A) CaCO3 + 2HNO3>Ca( NO3)2 +CO2+H2O
CaCO3 + 2HNO3 > Ca(NO3)2 +CO2+H2O
this is alreay balanced
B) BaCl2+ Na2SO4 >BaSO4+NaCl
Balance Cl and Na
BaCl2+ Na2SO4 >BaSO4+2NaCl
Pb(NO3)2 + 2HCL> PbCl2 + 2HNO3
D) AgNO3 +Zn>Zn(NO3)2 +Ag
2AgNO3 +Zn>Zn(NO3)2 + 2Ag
now, net ionic:
CaCO3 + 2H+ = Ca+2 + CO2 + H2O
Ba+2 + SO4-2 = BaSO4
Pb+2 +2Cl- = PbCl2
2Ag+ + Zn(s) = Zn+2 + 2Ag(s)
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