Jumat, 14 Oktober 2011

ION

ION


Ion is an atom or molecule by the number of electrons are more or less thannormally, which gave it a positive or negative electrical charge. Because ion "want" to beneutral by acquiring or losing electrons berlebiha, it has chemical propertiesof interest. Ions normally present in solution. There are three types of ions: anionsnegatively charged, positively charged cations and radicals or radical ions are veryreactive because it has a large number of free electrons.Ion solution is usually formed when certain molecules such as salts dissolved in water.The interaction between the solute and solvent molecules separating the weak molecular bonds,such as salt, into two or more ions. When you put salt in the water, heinto sodium and chloride ions, which are both very important for human life.If someone shortage of salt for too long, they will eventually die. Ions are importantfor other life (called electrolytes) is a potassium (K), calcium (Ca2), magnesium (Mg 2),hydrogen phosphate (HPO42-), and hydrogen carbonate (HCO3-).Ion solution other than the salt solution is acidic and alkaline. For example hydrochloric acid formedwhen hydrogen chloride dissolves in water. Chloride is split into two hydrogen ions, H and Cl-.H reacts with water to produce H3O, hydronium ions, while the chlorine remains aschloride ions. Because the ionization process is complete, a strong acid called hydrochloric acid. Acid strengthmeasured by how much they have H ions. Hydrochloric acid has many H ions,so he is very acidic. In fact, hydrochloric acid can be dissolved through the glass and all metalsexcept iridium, although the pace is slow corrosion.Another category of ion solution is alkaline. But measured by the concentration of hydrogen ions,ion concentration was measured by alkaline hydroxide (OH-). One example of a base ispotassium hydroxide, which is a precursor chemical in most liquid soaps are gentle.When dissolved in water, potassium hydroxide produces a strong alkaline solution. Alkaliis a kind of base. Potassium hydroxide has a number of interesting chemical properties - oneonly is its hygroscopic (attracts water), which makes it a dryeris strong. When it reacts with water, the reaction is exothermic which means generatingsignificant heat.The last major group of ions are radical ions or radicals. Examples include radicalsuperoxide (O2-), which is used by the immune system to killmicroorganisms that attack, and nitric oxide, which used the body as a molecularan important signal. Such as acids and bases, radicals are very reactive and has a number of applicationsin chemistry. One aspect that is not good is that the existence of radicalin the body tends to break down the body's tissues from time to time, causingof aging.2 / 2

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