It really depends on what you are trying to cook. Some recipes use baking *powder*. My recommendation is that you search online for this recipe to see if there are some that use baking powder. Are you trying to limit your sodium intake?
Three times as much baking powder.
There is no substitute for baking soda.
Yes. Baking soda will work as a substitute in this case.
Not to bake stuff like bread. You can substitute 1 baking soda for 2 baking flour to make reductions. You can substitute 1 baking soda for 1 baking flour for gags (throwing on someone in the shower).
Baking powder and salt.
Baking Soda
baking powder.
No. there is a chemical reaction with the baking soda and the other ingredients, not with the flour.
No, baking soda cannot substitute for baking soda because they are the same thing. Baking soda is just another name for sodium bicarbonate.
baking soda
You cannot use baking powder as a substitute for baking soda.
baking powder
You could use yeast instead of baking powder.