Specific Conductivity (K): It is the conductivity of 1
cubic-centimetre of a solution.
Equivalent Conductivity: It is the conductivity of a
solution containing 1 equivalent of the solute between two parallel
electrodes separated by 1 cm.
S cm2 equivalent -1
Molar Conductivity: It is the conductivity of a
solution containing 1 mole of a solute between two parallel electrodes
separated by 1 cm.
S cm2 mol -1
Kohlrausch'sLaw : It states that the molar
conductivity at infinite dilution of an electrolyte is equal to the sum
of the molar conductivities at infinite dilution of the ions produced by
Ohm's Law: It states that the strength
of an electric current is directly proportional to the potential
difference and inversely proportional to the resistance of the circuit.
V = IR
V is potential difference in
I is current in ampere
R is resistance in ohms
Degree of Ionisation: It is the extent of dissociation of an
Strong Electrolyte: An electrolyte that ionises completely in solution is called a strong
Weak Electrolyte: An electrolyte that ionises partially in solution is called a weak
Cell Constant: It is the ratio l/A
for a conductivity cell where l is the distance between the
electrodes and A is the area of the electrode.
= K × R
Specific conductivity × Resistance
Battery: It is a combination of two
or more galvanic cells electrically connected to work together to
produce electric energy.