Ions in aqueous solution, Chemistry

Assignment Help:

IONS IN AQUEOUS SOLUTION

Ionic models:

Ions are charged chemical substance. Positively charged ions are called cations as they travel to the cathode of an electrolytic cell. Negatively charged (-) ions are termed anions as they travel to the anode. A salt dissolves to produce these cations and anions. When a salt (solute) is dispersed in water (solvent) (see Topic D1) to form an aqueous solution of ions, also termed electrolyte solution or an ionic, there is an energetically favorable ion-dipole interaction (Fig. 1).

1288_ions.png

Fig. 1. The interaction between water

and a cation and water and an anion

in solution.

Due to the different affinities of oxygen and hydrogen for electrons (-), the oxygen has a net fractional negative charge (δ-) and the protons have a net fractional positive charge (δ+), producing a dipole in the water molecule. The charge on the cation produces a electric field (positive gradient of potential with respect to distance) in solution that aligns the water dipoles locally with oxygen closest to the ion. The anion produces a negative electric field that orients the water dipole with the protons closest to the ion.


Related Discussions:- Ions in aqueous solution

Ayclalkanes.., perkin ring closure reaction of melonic ester with C2H5O-Na+...

perkin ring closure reaction of melonic ester with C2H5O-Na+

S block element ., discuss the structure of beryllium chloride Becl2.

discuss the structure of beryllium chloride Becl2.

#titlecarbon, bilogical importance of carbon coumpounds

bilogical importance of carbon coumpounds

Dipole moment - applications of hyperconjugation, Dipole Moment - Applicati...

Dipole Moment - Applications of Hyperconjugation As hyperconjugation affects the development of charges, it as well affects the dipole moment in the molecule. The increase in d

Proteins, why is the isoelectric point of all amino acids not at ph 7 and w...

why is the isoelectric point of all amino acids not at ph 7 and what has the ionisable side chains got to do with it?

Explain asymmetric molecule, Explain the following terms: (a) Asymmetric...

Explain the following terms: (a) Asymmetric molecule (b) R and S notations

Illustrate metallic bonding, Q. Illustrate Metallic Bonding? Ans. ...

Q. Illustrate Metallic Bonding? Ans. A metal is crystalline because it has a regularly repeating, closely packed structure. In a metal, though, this closely packed structu

#basicity of nitrogen containing organic compounds, #between p-amino anilin...

#between p-amino aniline &p-methyl aniline which is more basic?

Chemical bonding, When NaCl is dissolved in water, the sodium ion become

When NaCl is dissolved in water, the sodium ion become

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd