Dissolve 116 g of silver nitrate in 120 mL of water, then dissolve 50 g of sodium nitrite in 90 mL of water with stirring. Then pour the silver nitrate solution to the sodium nitrite and stir for 10 minutes. Then filter and wash with cold 100 mL of water and 100 mL of ethanol. Dry in a desiccator over anhydrous calcium chloride in a dark room.
AgNO3 + NaNO2 = NaNO3 + AgNO2
Silver nitrate solution
Sodium nitrite solution
Both solutions were combined and stirred
Wash with water and dry under the suction
Wash with ethanol in two portions with drying under the suction
Drying under calcium chloride