Re: Ascorbic Acid and Sodium Ascorbate ( Vit C question) [edited]
Baking soda is bicarbonate of soda. A common brand is (as advertized on their box) Arm and Hammer Pure Baking Soda (For Baking Cleaning and Deodorizing).
http://en.wikipedia.org/wiki/Baking_soda
Sodium bicarbonate is the chemical compound with the formula NaHCO3. Because it has long been known and is widely used, the salt has many other names including sodium hydrogencarbonate, sodium bicarb, baking soda, bread soda, cooking soda, bicarb soda, saleratus or bicarbonate of soda.
Please do not confuse baking soda with baking powder.
http://en.wikipedia.org/wiki/Baking_powder
Baking powder is a dry chemical leavening agent used in baking and deodorizing. Common low-temperature acid salts include cream of tartar, calcium phosphate, and citrate. High-temperature acid salts are usually aluminium salts, such as calcium aluminum phosphate. They can be found not only in many baking powders, but also in many non-dairy coffee creamers. Excess aluminium in the diet may be detrimental to human health[1], and so baking powders are available without it for people who are concerned and those sensitive to the taste. Baking powder is generally just baking soda mixed with an acid, and a number of kitchen acids may be mixed with baking soda to simulate commercial blends of baking powder.