What is the recipe to produce a 3M solution of Sodium Nitrate?
You can produce 3 Mol sodium nitrate by neutralizing 3 Mol of nitric acid with 3 Mol of sodium carbonate:

HNO3 + NaHCO3 → NaNO3 + H2O + CO2

Or 3 Mol of sodium bicarbonate:

2 HNO3 + Na2CO3 → 2 NaNO3 + H2O + CO2
What are some potential applications of this?
A 3M solution of sodium nitrate (NaNO3) has several potential applications, including:

1. Agriculture: Sodium nitrate is commonly used as a nitrogen-rich fertilizer to promote plant growth and enhance crop yields.
2. Chemical industry: It serves as a precursor in the production of nitric acid, as well as a component in manufacturing glass, explosives, and fireworks.
3. Laboratory use: Sodium nitrate solutions are often employed as an analytical reagent or a component in chemical reactions, due to its strong oxidizing properties.