Ionic Equilibrium
1.0 Reversible Reaction
1.0 Reversible Reaction
A reaction is said to be reversible if the composition of reaction mixture on the approach of equilibrium at a given temperature is the same irrespective of the initial state of the system i.e irrespective of the fact whether we start with the reactants or the products.
$${H_{2(g)}}{\text{ + }}{I_2}_{(g)}{\text{ }} \rightleftharpoons {\text{ }}2H{I_{(g)}}$$
Only when there is a reversible reaction, an equilibrium can be established and when the reaction involves ions (usually aqueous solutions taken), the equilibrium thus established is known as Ionic Equilibrium.
It is the equilibrium established between ions in solutions and unionized molecules. It particularly deals with weak electrolytes.
What electrolytes are?
Electrolytes are chemical substances which can conduct electricity in their aqueous/molten state due to the movement of electrons.
When an electrolyte is dissolved in a solvent, it dissociates into two oppositely charged particles called ions.
For example: $XY \rightleftharpoons {X^ + } + {Y^ - }$
