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General |
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| Name | Sodium hydrogen carbonate |
| Chemical formula | Na HCO3 |
| Appearance | White solid |
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Physical |
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| Formula weight | 84.0 amu |
| Melting point | Decomposes at (60 °C) |
| Density | 2.2 ×103 kg/ m3 |
| Crystal structure | ? |
| Solubility | 10.3 g in 100g water |
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Thermochemistry |
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| ΔfH0solid | -951 kJThe joule (symbol J also called newton metre or coulomb volt is the SI unit of energy and work. The unit is pronounced to rhyme with "tool", and is named in honour of the physicist James Prescott Joule (1818-1889). 1 joule 1 N · 1 m 1 newton · 1 metre 1 k/ molThe mole (symbol: mol) is one of the seven SI base units and is commonly used in chemistry. It measures the amount of substance of a system and is defined as the amount of substance that contains as many elementary entities as there are atoms in exactly 0 |
| S0solidIn chemistry, the standard molar entropy is the entropy content of one mole of substance, under conditions of standard temperature and pressure. By comparing the entropies of products and reactants in a chemical reaction, we can determine whether the reac | 102 JThe joule (symbol J also called newton metre or coulomb volt is the SI unit of energy and work. The unit is pronounced to rhyme with "tool", and is named in honour of the physicist James Prescott Joule (1818-1889). 1 joule 1 N · 1 m 1 newton · 1 metre 1 k/ molThe mole (symbol: mol) is one of the seven SI base units and is commonly used in chemistry. It measures the amount of substance of a system and is defined as the amount of substance that contains as many elementary entities as there are atoms in exactly 0· KThe kelvin (symbol: K is the SI unit of temperature, and is one of the seven SI base units. It is defined by two facts: zero kelvin is absolute zero (when molecular motion stops), and one kelvin is the fraction 1/273. 16 of the thermodynamic temperature o |
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Safety | |
| Ingestion | Safe except in very large quantities. |
| Inhalation | May cause irritation. |
| Skin | May cause irritation. |
| Eyes | May cause pain and redness |
| More info | Hazardous Chemical Database |
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SIThe International System of Units (symbol: SI (for the French phrase Systeme International d'Unites , is the most widely used system of units. It is used for everyday commerce in virtually every country of the world except the United States, and it is uni units were used where possible. Unless otherwise stated, standard conditions were used. | |
Sodium bicarbonate ( Na HCO3), or sodium hydrogen carbonate, also known as baking soda, is a soluble white anhydrous or crystalline compound, with a slight alkaline taste resembling that of sodium carbonate. It is found in many mineral springs and also produced artificially.
It is also used as an antacid to treat acid indigestion and heartburn. The anhydrous form is also used to absorb moisture and odours; a box can be left in the refrigerator for this purpose. Additionally, a paste from baking soda can be very effective when used in cleaning and scrubbing. Used in toothpaste, baking soda helps to gently remove stains, whiten teeth, and freshen breath.
Sodium bicarbonate, when exposed to a moderately strong acid, releases carbon dioxide and water:
At 60 degrees C it decomposes into sodium carbonate, water and carbon dioxide:
It is used in combination with acidic compounds as a leavening agent in baking: some forms of baking powder contain sodium bicarbonate. Formerly, it was used as a source of carbon dioxide for soda water.