What is protonated and deprotonated?
What is protonated and deprotonated?
When a molecule is deprotonated to become its conjugate base, it gains negative charge – and therefore becomes more electron-rich. And when a molecule is protonated to become its conjugate acid, it loses a unit of negative charge – and therefore becomes more electron – poor.
What does protonated mean?
transitive verb. : to add a proton to. intransitive verb. : to acquire an additional proton.
What causes protonation?
Protonation is the addition of a proton to an atom, molecule, or ion. Both protonation and deprotonation occur in most acid-base reaction. When a species is either protonated or depronated, its mass and charge change, plus its chemical properties are altered.
How do you know if something is protonated?
At a pH below the pKa for each functional group on the amino acid, the functional group is protonated. At a pH above the pKa for the functional group it is deprotonated. If the pH equals the pKa, the functional group is 50% protonated and 50% deprotonated.
What does pK mean in chemistry?
A measure of the strength of an acid on a logarithmic scale. The pK value is given by log10(1/Ka), where Ka is the acid dissociation constant. pK values are often used to compare the strengths of different acids.
How is pH related to Ka?
In other words, Ka provides a way to gauge the strength of an acid. Larger values signify stronger acids. The pH (power of hydrogen) of a solution is a measure of the concentration of hydrogen ions and is also a measure of acidity, but it isn’t the same as Ka.
Is triethylamine an organic compound?
Triethylamine, also known as (C2H5)3N or NET3, belongs to the class of organic compounds known as trialkylamines. These are organic compounds containing a trialkylamine group, characterized by exactly three alkyl groups bonded to the amino nitrogen. Triethylamine is a very strong basic compound (based on its pKa).
Why is triethylamine not soluble in water?
Triethylamine is a polar organic compound with intermolecular forces not compatible with water. Therefore triethylamine is slightly soluble in water.