. Balance the following reactions then tell which are metathesis (double replacement) reactions:
a) CaCO3 + 2HNO3 Ã Ca(NO3)2 + CO2 + H2O
b) BaCl2 + Na2SO4 Ã BaSO4 + NaCl
c) Pb(NO3)2 + HCl à PbCl2 + HNO3
d) AgNO3 + Zn à Zn(NO3)2 + Ag
3. A solution was prepared by dissolving 1.564 g of NaCl and 2.765 g of KCl 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 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?
I need help with those three questions please.
. Balance the following reactions then tell which are metathesis (double replacement) reactions:
a) CaCO3 + 2HNO3 Ã Ca(NO3)2 + CO2 + H2O
b) BaCl2 + Na2SO4 Ã BaSO4 + NaCl
c) Pb(NO3)2 + HCl à PbCl2 + HNO3
d) AgNO3 + Zn à Zn(NO3)2 + Ag
3. A solution was prepared by dissolving 1.564 g of NaCl and 2.765 g of KCl 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 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?
I need help with those three questions please.
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