What is a counterion in chemistry?
: an ion having a charge opposite to that of the substance with which it is associated.
What is counter-ion example?
An ion of opposite charge to a given ion. For example, in a crystal of sodium chloride, the chloride ions can be regarded as counter ions to the sodium ions. In certain colloids, the charge on the surface of colloidal particles is neutralized by oppositely charged counter ions in the surrounding solution.
What are Co ions?
Any ion of low molecular mass present in a colloidal solution or substance that has a charge of the same sign as the (net) charge of a (specified) colloidal ion under particular conditions.
What is counter-ion screening?
Counter ions surrounding the interface of particles reduce the surface charge of the particles through charge screening, which causes agglomeration and settling.
What is the purpose of a counter-ion?
A counterion (pronounced as two words, i.e. “counter” “ion”, and sometimes written as two words) is the ion that accompanies an ionic species in order to maintain electric neutrality.
Why is Counterion release important?
Counterion release also plays an important role in the adsorption of flexible polyelectrolytes on flat surfaces37 or the formation of complexes of such polyelectrolytes with other rigid macroions;38,39 these scenarios have been reviewed comprehensively, too.
Why are counter ions important?
In a general way, counter-ions can affect the crystallization of coordination polymer products, leading to different coordination structures. In some cases, especially in the assembly of silver(I) coordination polymers , the counter-ion can play a key role in the formation of final supramolecular structure.
Why is ethanol a better solvating solvent than tert butyl alcohol quizlet?
Which of the following solvents can be used with NaNH2? Why is ethanol a better solvating solvent than tert-butyl alcohol? ethanol is less sterically hindered and more capable of interacting with the solute. Identify the most sterically hindered alcohol.
What do Counterions do?
Counterions are the mobile ions in ion exchange polymers and colloids. Ion-exchange resins are polymers with a net negative or positive charge. Counterions are used in phase-transfer catalysis. In a typical application lipophilic countercation such as benzalkonium solubilizes reagents in organic solvents.
How do you determine Counterion?
In order to detect these diverse counter ions, there are two commonly used analytical techniques:
- Ion Chromatography (IC) with conductivity detection.
- Ultra-High Performance Liquid Chromatography (UHPLC) with Charged Aerosol Detection (CAD) and/or UV detection.
What do counter ions do?
A counterion (pronounced as two words, i.e. “counter” “ion”, and sometimes written as two words) is the ion that accompanies an ionic species in order to maintain electric neutrality. Thus, the counterion to an anion will be a cation, and vice versa.
What are free ions?
[¦frē ′ī‚än] (physical chemistry) An ion, such as found in an ionized gas, whose properties, such as spectrum and magnetic moment, are not significantly affected by other atoms, ions, or molecules nearby.