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Sodium bicarbonate

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Identification
Molecular formula
NaHCO3
CAS number
144-55-8
IUPAC name
sodium;hydrogen carbonate
State
State

At room temperature, sodium bicarbonate is a solid substance. It is commonly encountered as a powder, though can also be found in the form of crystalline granules depending on its processing.

Melting point (Celsius)
50.00
Melting point (Kelvin)
323.15
Boiling point (Celsius)
50.00
Boiling point (Kelvin)
323.15
General information
Molecular weight
84.01g/mol
Molar mass
84.0070g/mol
Density
2.1590g/cm3
Appearence

Sodium bicarbonate appears as a white crystalline powder that is often found in a fine or slightly coarse granularity. It is odorless but has a slight to moderately saline, alkaline taste. The powder is commonly known in households as baking soda.

Comment on solubility

Solubility of Sodium Hydrogen Carbonate

Sodium hydrogen carbonate, commonly known as baking soda, is notable for its excellent solubility in water. Here are some key points regarding its solubility:

  • High Solubility: Sodium hydrogen carbonate (NaHCO3) is highly soluble in water, with a solubility of about 9.6 g per 100 mL at room temperature.
  • Temperature Effect: Solubility increases with temperature, meaning that hot water can dissolve more sodium hydrogen carbonate than cold water.
  • pH Influence: The compound acts as a weak base in solution, leading to a mild alkaline pH, which can affect its solubility depending on other pH conditions in the solution.
  • Applications: This high solubility makes sodium hydrogen carbonate ideal for various applications, such as baking, where it acts as a leavening agent.

In summary, sodium hydrogen carbonate is characterized by its remarkable ability to dissolve in water, making it readily available for numerous chemical and culinary processes. Its interaction with temperature and pH further enhances its versatility as a soluble compound.

Interesting facts

Interesting Facts about Sodium Hydrogen Carbonate

Sodium hydrogen carbonate, more commonly known as sodium bicarbonate or baking soda, is a fascinating compound with a variety of uses and properties that make it a staple in both kitchens and laboratories. Here are some interesting insights about this versatile compound:

  • Common Household Item: Sodium bicarbonate is well-known as a leavening agent in baking. It reacts with acids to produce carbon dioxide, which causes dough to rise, creating fluffy pastries and breads.
  • pH Regulation: The compound acts as a buffering agent, helping to maintain pH levels in various chemical and biological systems. It is often used in swimming pools and aquariums to neutralize acidity.
  • Medical Applications: Sodium bicarbonate is used in medicine, particularly in the treatment of acidosis, where it helps to neutralize excess stomach acid, making it a common ingredient in antacids.
  • Environmental Impact: It is considered environmentally friendly due to its non-toxic and biodegradable nature, making it a popular choice for natural cleaning products.
  • Culinary Uses Beyond Baking: Aside from baking, sodium bicarbonate can be used to tenderize meat, freshen up the refrigerator, and even as a gentle abrasive for cleaning surfaces.

Quote from Chemistry

As noted by renowned chemist Linus Pauling, "The best way to have a good idea is to have a lot of ideas." Sodium bicarbonate exemplifies this by serving multiple roles in chemistry and everyday life.

In conclusion, sodium hydrogen carbonate is not just a simple compound; it plays a crucial role in various applications across different fields—and it continues to be an essential substance in both science and daily life.