Write the reaction equations. SiO2- Na2SiO3- Na2SO4- NaCl- NaNO3- NaNO2

Silicon oxide reacts with sodium hydroxide. The reaction products are sodium silicate and water.

SiO2 + 2 NaOH = Na2SiO3 + H2O

Sodium silicate is treated with iron (II) sulfate, we get a precipitate of iron (II) silicate and sodium sulfate in solution.

FeSO4 + Na2SiO3 = FeSiO3 + Na2SO4

Sodium sulfate when interacting with barium chloride forms a precipitate of barium sulfate and sodium chloride in solution.

Na2SO4 + BaCl2 = 2 NaCl + BaSO4

Sodium chloride is treated with silver nitrate. Silver chloride leaves the reaction medium as a precipitate, sodium nitrate remains in solution.

NaCl + AgNO3 = AgCl + NaNO3

Sodium nitrate can be obtained from sodium nitrite by treating the sodium nitrate melt with lead.

NaNO3 + Pb = NaNO2 + PbO

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