The reaction between sodium bicarbonate (NaHCO₃) and silver nitrate (AgNO₃) involves two compounds that are both soluble in water.
Sodium bicarbonate is soluble, with its solubility increasing with temperature1. Silver nitrate is also quite soluble in water2. When these two compounds react, they form silver bicarbonate (AgHCO₃) and sodium nitrate (NaNO₃), both of which are soluble in water. Therefore, the products of the reaction between NaHCO₃ and AgNO₃ are soluble.
However, it’s important to note that silver bicarbonate is unstable and decomposes, so you would typically observe silver carbonate (Ag₂CO₃), which is insoluble
while the initial reactants are soluble, the reaction leads to the formation of an insoluble compound, silver carbonate.
