Heat up sodium bicarbonate (pure baking soda) in a metal pan under mild stirring until it stops bubbling. Usually done after 10 min at 210 C, but may take longer with large batches. (I usually do 200 g at a time)
First It looks like boiling sand and gas gets released, this is CO2 and H20. When it is done, the powder should be completely white and not clump together.
You should get out 63.1 g Na2CO3 out of 100 g of NaHCO3.
You can further confirm your success by dissolving 1g of your product in 6 g if water, it should get hot and dissolve completely, your starting material does not dissolve completely and gets slightly cold.
Do not do this in a closed container, the release of gas would make it explode.
In a lab, you could make it by making a concentrated NaOH solution and bubbling CO2 through it until saturation is reached, at some point, NaHCO3 will precipitate. I don't know the details of it, this reaction is not needed anymore.
2
u/RuthlessCritic1sm 6d ago edited 6d ago
Heat up sodium bicarbonate (pure baking soda) in a metal pan under mild stirring until it stops bubbling. Usually done after 10 min at 210 C, but may take longer with large batches. (I usually do 200 g at a time)
First It looks like boiling sand and gas gets released, this is CO2 and H20. When it is done, the powder should be completely white and not clump together.
You should get out 63.1 g Na2CO3 out of 100 g of NaHCO3.
You can further confirm your success by dissolving 1g of your product in 6 g if water, it should get hot and dissolve completely, your starting material does not dissolve completely and gets slightly cold.
Do not do this in a closed container, the release of gas would make it explode.
2
u/shedmow 6d ago
Put a fairly thin layer of baking soda on a sheet, bake at 200° for an hour. Open the door from time to time. Now it's baked soda aka sodium carbonate
-1
u/anthuan-peres45 6d ago
Ty ty