The III is there because as a transition metal, iron can have multiple oxidation states. This means iron is 3+. The charge on each Cl is -1, so you need 3.
This gives you FeCl3
Next, Barium has 2+ charge, so you need two OH-'s
i.e. Ba(OH)2
The reaction is:
BaCl2 + Na2SO4 + BaSO4(s) + 2 NaCl
The formula unit for the formation of potassium chloride and barium sulfate is one mole. One unit of potassium sulfate and barium chloride are required for the reaction.
calcium sulfate
add water to dissolve the sodium chloride, filter and you can collect the barium sulfate behind the filter paper
precipitate of balium sulphate and solution of sodium chloride is formed!
The precipitate will be barium sulfate. The reaction is as follows:BaCl2(aq) + Na2SO4(aq) ==> 2NaCl(aq) + Ba(SO4)(s)
The white solid precipitated when an aqueous solution of barium chloride is mixed with an aqueous solution of sodium sulfate is named "barium sulfate" and has the formula BsSO4.
The formula unit for the formation of potassium chloride and barium sulfate is one mole. One unit of potassium sulfate and barium chloride are required for the reaction.
calcium sulfate
Sodium chloride has the chemical formula NaCl and sodium sulfate has the chemical formula Na2SO4.
This reaction is:NaCl + H2SO4 = NaHSO4 + HCl
yes
add water to dissolve the sodium chloride, filter and you can collect the barium sulfate behind the filter paper
No reaction occurs
precipitate of balium sulphate and solution of sodium chloride is formed!
The precipitate will be barium sulfate. The reaction is as follows:BaCl2(aq) + Na2SO4(aq) ==> 2NaCl(aq) + Ba(SO4)(s)
PbCu2
The chemical formula of sodium sulfate is Na2SO4. The chemical formula of barium chloride is BaCl2. BaCl2 + Na2SO4-----------BaSO4 + 2 NaCl BaSO4 is a white, practically insoluble in water precipitate; this property is important in gravimetric analysis.