Ions in aqueous solution, Chemistry

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.

Posted Date: 7/20/2012 4:24:20 AM | Location : United States







Related Discussions:- Ions in aqueous solution, Assignment Help, Ask Question on Ions in aqueous solution, Get Answer, Expert's Help, Ions in aqueous solution Discussions

Write discussion on Ions in aqueous solution
Your posts are moderated
Related Questions
LITHIUM AND BERYLLIUM MARKEDLY DIFFERENT FROM OTHER MEMBERS OF THEIR RESPECTIVE GROUP?.

Factors effecting lattice energy of ionic compound

theory of oxidation & reduction titration with examples

Draw a figure to show splitting of degenerate d orbitals in an octahedral crystal field. How does the magnitude of decide the real configuration old orbitals in a difficult enti

NMR Spectrum of benzyl methyl ether



is vinegar has a pungent odor. is it chemical or physical property?

Q. Illustrate Nature of light as a particle? Ans. You have seen that when excited electrons return to the ground state they release packets of energy, called photons. Photons

Electron enters the sub-shell for which (n+l)  value is minimum. This is enunciated as: (1) Hund's rule (2) Aufbau principle (3) Heisenberg uncertainty principle (4) P