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Carbonic acid

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Identification
Molecular formula
H2CO3
CAS number
463-79-6
IUPAC name
carbonic acid;guanidine
State
State

In its natural state at room temperature, carbonic acid is not found as a pure compound. It exists in equilibrium with carbon dioxide and water, typically found in aqueous solutions such as carbonated beverages.

Melting point (Celsius)
-80.00
Melting point (Kelvin)
193.15
Boiling point (Celsius)
-80.00
Boiling point (Kelvin)
193.15
General information
Molecular weight
62.02g/mol
Molar mass
62.0240g/mol
Density
1.6680g/cm3
Appearence

Carbonic acid is a weak, unstable acid that forms when carbon dioxide dissolves in water. It is typically not observed in its pure form, as it exists only in solution. The appearance in solution is clear and colorless.

Comment on solubility

Solubility of Carbonic Acid and Guanidine

The solubility of carbonic acid (H2CO3) and guanidine (NH2CO-NH2) presents interesting features that are essential for understanding their behavior in various chemical environments.

Carbonic Acid

Carbonic acid is moderately soluble in water, exhibiting the following characteristics:

  • Hydroscopic Nature: Being a weak acid, carbonic acid readily dissociates in water, establishing a dynamic equilibrium.
  • Equilibrium Dynamics: The presence of bicarbonate (HCO3) and carbonate ions (CO32−) contributes to its unique solubility behavior.
  • Temperature Dependency: Solubility may vary with temperature; higher temperatures typically favor the conversion of dissolved CO2 to its gaseous form, thereby reducing solubility.

Guanidine

Guanidine, on the other hand, is known for its remarkable solubility attributes:

  • High Aqueous Solubility: Guanidine is highly soluble in water, making it a common choice in various biological and chemical applications.
  • Concentration Solubility: It can dissolve in various concentrations, leading to important interactions with other biomolecules.
  • pH Effects: Solubility may be influenced by pH, as guanidine remains soluble across a wide range of conditions.

In summary, while carbonic acid exhibits moderate solubility and equilibrium behavior in water, guanidine stands out with its high solubility and adaptability to varying chemical environments. Understanding these solubility characteristics is vital for utilizing these compounds effectively in chemical processes.

Interesting facts

Interesting Facts About Carbonic Acid

Carbonic acid, a fascinating compound encountered frequently in nature and chemistry, is primarily known for its role in biochemical systems and the environment. Here are some key points about carbonic acid:

  • Source of Bubbly Beverages: Carbonic acid is formed when carbon dioxide dissolves in water, giving rise to the fizz in soft drinks and carbonated beverages. This process adds a refreshing sensation!
  • Role in Respiration: In the human body, carbonic acid plays a crucial role in maintaining pH balance. It forms part of the carbonic acid-bicarbonate buffer system, which is vital for regulating blood pH levels.
  • Natural Buffer: In nature, carbonic acid helps regulate the acidity of rainwater, influencing weathering processes of rocks and soil. It significantly contributes to the carbon cycle.
  • Weak Acid: Despite being classified as an acid, carbonic acid is actually a weak acid, meaning it does not fully dissociate in water. This property makes it essential in biochemical reactions where precise pH control is required.

As renowned chemist Linus Pauling once said, "The best way to have a good idea is to have a lot of ideas." Carbonic acid, with its various roles, certainly sparks numerous ideas in chemistry!

Interesting Facts About Guanidine

Guanidine is a lesser-known but intriguing compound with a unique structure and engaging properties. Here are some remarkable facts about guanidine:

  • Building Block of Life: Guanidine is formed from the amino acid arginine and is a crucial intermediate in the urea cycle, which helps the body eliminate waste nitrogen.
  • Versatile Reactant: This compound is known for its reactivity in organic synthesis. It acts as a strong base and is used to prepare various important chemical derivatives.
  • Potential Health Implications: In pharmaceutical chemistry, guanidine has attracted attention due to its potential applications in treating conditions like myasthenia gravis and diabetes.
  • Hydrophilic Nature: Guanidine possesses strong hydrogen bond-donating abilities, making it useful in interactions with biological molecules, thus aiding in drug development and biochemistry.

According to famed chemist Robert H. Grubbs, "The most important thing in scientific research is the ability to make connections." Indeed, the connections made by guanidine in biological systems underscore its significance in chemistry.

Synonyms
593-85-1
Guanidine carbonate salt
DTXSID0029189
V3394X3G2W
NSC 2171
EINECS 209-813-7
UNII-V3394X3G2W
AI3-14631
DTXCID109189
NSC-2171
EC 209-813-7
bis carbonate
guanidiniumcarbonat
Diguanidiniumcarbonat
GUANIDINE CARBONATE [INCI]
209-813-7
guanidine carbonate
guanidinium carbonate
tuxrbqhzzfvxlv-uhfffaoysa-n
Guanidine, carbonate
Guanidine carbonate(2:1)
Guanidinecarbonate
MFCD00013029
Guanidine carbonate (2:1)
CAS-593-85-1
Bisguanidinium Carbonate; Diguanidinium Carbonate; Guanidinium Carbonate
diguanidine carbonate
Guanidine carbonate salt, 99%
CHEMBL3187576
Tox21_113187
AKOS015950648
Tox21_113187_1
AT23545
FG33639
NCGC00344519-01
LS-12968
CS-0015157
G0161
Guanidine carbonate salt, purum, >=97.0% (NT)
Q19687227