use of sodium hydrogencarbonate

sodium hydrogencardonate can be dissolve in water and release carbon dioxide

2006-10-22 12:00:57 補充：
the sodium hydroxide solution and soda lime are use to absorb carbon dioxide

Sodium bicarbonate is primarily used in cooking where it reacts with other components to release carbon dioxide, that helps dough "rise". The acidic compounds that induce this reaction include cream of tartar, lemon juice, yogurt, etc.) as a in baking: some forms of baking powder contain sodium bicarbonate combined with cream of tartar. Some nutritionists, such as Erica White, caution against combining with cream of tartar or tartaric acid, as they are toxic substances.

[edit] For neutralization of acids
The reaction of acids with sodium bicarbonate is a common method for neutralizing acid spills. The advantage to this method is that one can use excess sodium carbonate, which is relatively innocuous. The neutralization process is signaled by the release of gaseous CO2. A wide variety of applications follow from its neutralization properties including ameliorating the effects of white phosphorus in incendiary bullets, from spreading inside a soldier's afflicted wounds. Military Application

[edit] Miscellaneous and domestic uses
Baking soda has many uses. [2]

an absorbant for moisture and odours; an open box can be left in a refrigerator for this purpose. However, baking soda does not actually absorb odors well when used in a refrigerator (see [3])
in toothpaste, baking soda helps to gently remove stains, whiten teeth, freshen breath, and dissolve plaque.[citation needed]
It is commonly used to increase the pH and total alkalinity of the water for pools and spas. Sodium bicarbonate can be added as a simple solution for restoring the pH balance of water that has a high level of chlorine.
A paste from baking soda can be very effective when used in cleaning and scrubbing.
A solution in warm water will remove the tarnish from silver when the silver is in contact with a piece of aluminum foil.
With water, it cleans the impurities on contact lenses. Rinse completely before wearing contacts to avoid stinging of the salt in baking soda.
Baking soda and boiling water unclogs drains.
One cup of baking soda maintains a healthy septic tank. It controls pH and keeps a good environment for the bacteria.[citation needed]
Can be used to clean vacuum flasks, especially after they've developed an odor from not being used for a long time whilst being stored with the cap on.
If made into a paste salve, it relieves burning from bug stings, poison ivy, nettles, and sunburn.
Baking soda helps remove body odours as it absorbs chemicals, apply using a powder puff.[citation needed]
It kills fleas and drives away ants. If it is applied to a pet's fur, it must be washed/rinsed off to prevent skin problems.
A small amount (1tsp) can be added to a beef stew to make tough meat tenderize faster. (However, this is no substitute for just stewing the meat for more time.)
It is used as a fabric softener in laundry.
It neutralizes battery acid.
It is used to test garden soil for acidity.
Can be used to kill crab grass in Florida St. Augustine grass. Must be used repeatedly to control but is effective. Dampen area then sprinkle lightly, too much may harm desired grass temporarily.
Sodium bicarbonate has been used as an endurance enhancer.
It is used as an antacid to treat acid indigestion and heartburn.

Sodium bicarbonate is used to give the pretzels (or correctly, bretzeln) their dark brown color.
Formerly, it was used as a source of carbon dioxide for soda water.