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
What are the examples of radiation hazards

Versatile nature of Carbon-Catenation The chemical compounds can be mainly classified into two main categories. These are organic and inorganic. More than 90 elements are in

Q. Explain about Sulphuric Acid? Sulphuric acid is one of the most important chemicals, both in industry as well as in the laboratory. Two methods are industrially used for

synthesis what is it

Nitrous acid (HNO2) is an unstable compound when prepared by the following reaction: HCl (g) + NaNO2 (s) ? HNO2 (l) + NaCl (s). As the product of the above reaction is unstable, t

A 10L helium balloon at a pressure of two bar at 27C. Some O 2 is now inside in balloon and final volume is made 30L. the pressure also fell to 1 bar at similar temperature. the p

The diffusion current for a standard 1 x 10-4 M solution of hydroquinone is found to be 17.5 µA. An unknown solution of hydroquinone, when diluted tenfold and analysed under simila

The total number of orbitals in an energy level designated by principal quantum number  n is equal to: (1) 2n                    (2) 2n 2            (3) n

Solid propellants these types of propellants are mixtures of solid fuel and a solid oxidizer. These are further categorized into two sub-classes, (1) Composite propellants

Water at 150 kPa is contained in a 300 L tank.At this state (state 1), 95% of the volume isoccupied by saturated vapour. Heat is transferred to the water thereby raising itspressur