Baking powder has tartaric acid in already.
You might be thinking of baking soda, which needs vinegar, buttermilk, or lemon juice to activate. Baking powder is a blend of simple chemicals, and activates with water.
No, no heat is involved when mixing baking powder and water.
when baking powder combines with water, it turns into carbon dioxide which rises in the pastry, causing it to puff
yes it does
Backing powder can be dissolved in lemonade.
For a good long time if it is kept properly stored. Here is a test you can use to make sure your baking powder is usable . Put water in a teaspoon and sprinkle a little bit of the baking powder in the water. If your baking powder is good the water will fizz sort of like a soda does. if you don't hear or see the fizz then baking powder is no good and should be tossed out.
If you take a pinch of the baking powder and put it in water, it should fizzle. If it does not fizzle, it is no longer fresh.
it just has to do with the cemecals in it
Baking powder is not the same as baking soda. Baking powder is a 1:3 ratio of baking soda to cream of tartar, which are both raising agents designed for different purposes - one of them is activated by water, the other by heat. Baking soda is "strong" compared to baking powder, and is not a direct substitute for baking powder.
state of matter
Baking powder (baking soda + some acid salts) will release CO2 (carbon dioxide gas) when placed in water. So, even though, in theory, all reactions are reversible, it is not likely that baking powder in water is reversible once the CO2 gas has formed.
No, at pH = 8 (tap water pH) no CaCO3 will precipitate at normal tap water temperature. pH of sodium bicarbonate (baking powder) is also 8.