Double Displacement?
A white precipitate reaction
The spectator ions are Ag+ and (NO3)-.
Barium Sulphate
2 NaHCO3 + Ba(NO3)2 --> 2 NaNO3 + Ba(HCO3)2 Sodium Hydrogen Carbonate (baking soda) + Barium Nitrate --> Sodium Nitrate + Barium Hydrogen Carbonate.
Na2S + Cu(NO3)2 -> 2NaNO3 + CuS
A white precipitate reaction
If the sodium sulfate and barium nitrate are both in solution in water, a precipitate of barium sulfate will be formed, because this salt is much less soluble in water than barium nitrate, sodium sulfate, or sodium nitrate.
The spectator ions are Ag+ and (NO3)-.
In aqueous solution, barium nitrate and sodium hydroxide undergo a double replacement reaction, in which barium ions combine with hydroxide ions to form barium hydroxide and sodium ions combine with nitrate ions to form sodium nitrate. Barium hydroxide is insoluble in water, so it precipitates out of solution. Ba(NO3)2(aq) + 2NaOH(aq) --> Ba(OH)2(s) + 2NaNO3(aq)
whencalcium chloride reacts with barium nitrate calcium nitrate and barium chloride wil be formed. whencalcium chloride reacts with barium nitrate calcium nitrate and barium chloride wil be formed.
Barium Sulphate
Adding a solution of Sodium Sulphate to aqueous Barium Nitrate will produce a white precipitate of Barium Sulphate with Sodium Nitrate remaining in solution.
The balanced reaction should look like this: 2Ar(NO3)3 + 3Na2S Ar2S3 + 6Na(NO3) The molar weight of arsenic sulfide is 176.091 g/mol. 1 gram of arsenic sulfide therefore constitutes 0.006 mol. The stoichiometry of the above chemical reaction indicates that 2 moles of arsenic nitrate and 3 moles of sodium sulfide are required to make 1 mole of arsenic sulfide and 6 moles of sodium nitrate. These numbers are the ones that appear in front of the chemicals and are called the stoichiometric coefficients. You therefore need 0.012 mol of arsenic nitrate and 0.018 mol of sodium sulfide. The molar weights of these compounds are 132.959 g/mol and 78.043 g/mol respectively. Multiplication then gives you the answer which is 1.596 g of arsenic nitrate, and 1.405 g of sodium sulfide.
BaS2 Barium sulfide.
2 NaHCO3 + Ba(NO3)2 --> 2 NaNO3 + Ba(HCO3)2 Sodium Hydrogen Carbonate (baking soda) + Barium Nitrate --> Sodium Nitrate + Barium Hydrogen Carbonate.
Na2S + Cu(NO3)2 -> 2NaNO3 + CuS
The simplest of ways is to mix Ba2+ with CO32- but with precipitation I can't help sorry