What is strong electrolyte and week electrolyte?

Answer 1

A strong electrolyte is a solute that completely, or almost completely, ionizes or dissociates in solution. These ions are good conductors of electric current in the solution.

Originally, a "strong electrolyte" was defined as a chemical that, when in aqueous solution, is a good conductor of electricity. With greater understanding of the properties of ions in solution its definition was gradually changed to the present one.

A concentrated solution of this strong electrolyte has a lower vapour pressure than that of pure water at the same temperature. Strong acids, strong bases, and soluble ionic salts that are not weak acids or weak bases are strong electrolytes.
For strong electrolytes, a single reaction arrow shows that the reaction occurs completely in one direction, in contrast to the dissociation of weak electrolytes, which both ionize and re-bond in significant quantities [1].
Strong electrolyte(aq) → Cation+(aq) + Anion-(aq) .

Definition of weak electrolyte :
A substance that only partially ionizes in aqueous solution.
Weak electrolytes are those electrolytes which in water solutions dissociate only partially, giving ions and which are in equilibrium with undissociated molecules. Their water solutions conduct electric current weakly. For example, acetic acid partially dissociates into acetate ions and hydrogen ions, so that an acetic acid solution contains both molecules and ions.

Examples of strong and weak electrolytes are given below:

Strong Electrolytes : strong acids HCl, HBr, HI, HNO3, HClO3, HClO4, and H2SO4
strong bases NaOH, KOH, LiOH, Ba(OH)2, and Ca(OH)2
salts NaCl, KBr, MgCl2, and many, many more
Weak Electrolytes :
weak acids HF, HC2H3O2 (acetic acid), H2CO3 (carbonic acid), H3PO4 (phosphoric acid), and many more
weak bases NH3 (ammonia), C5H5N (pyridine), and several more, all containing "N"

Answer 2

A strong electrolyte is a solute that completely, or almost completely, ... A concentrated solution of this strong electrolyte has a lower vapour pressure

Answer 3

Strong electrolytes and weak electrolytes are analogous to strong and weak acids/bases. Strong means dissociates completely in water (breaks into ions) while weak means doesn't dissociate completely (only part of the compound breaks into ions).

There are many examples of each...most salts (ionically bonded-metal + non-metal) are strong while covalently bonded are very weak.

See the following site for a good tutorial:

http://www.science.uwaterloo.ca/~cchieh/cact/c120/electrolyte.html

Answer 4

a strong electrolyte readily dissociates into its constituting ions when dissolves in water.they have got very high pK value.due 2 the large no. of ions produced,they are very good conducters of electricity.an electro lyte can be strong if it has been produced from 2 strong acid n base,strong acid n weak base or vice versa.
eg:NaCl , CH3COONa ,KCl etc..

a weak elec doesnt readily dissociate in water.have low pK value and is weak conductor of elec. eg:NH4Cl , pyridine etc

Answer 5

a strong electrolyte is a substance that conducts elctricity.eg,sodium
a weak electrolyte is a substance that does not conducts electricity

Answer 6

There are strong and weak electrolytes. Different types of electrolytes produce different kinds of ions in solution: hydrogen ions (Arrhenius acids); hydronium ions (Brønsted acids); hydroxide ions (Arrhenius bases); and other cations and anions in the form of salts.

Answer 7

strong electrotiles r those electrolytes which comptely ionize to give ions in molten state
nacl=na+ + cl-
while weak r those which partially ionize to give ions in molten state
NH4Cl<>NH4+ + cl-
here <> sign indictes that it is patially ionized

Answer 8

strong electrolyte is NACI

week electrolyte is AMMONIUM CHLORIDE