How does molar conductance vary with dilution in the case of a weak electrolyte?

How does molar conductance vary with dilution in the case of a weak electrolyte?

Molar conductivity increases with decrease in concentration as the total volume, V, of a solution containing one mole of electrolyte also increases. Upon dilution, the concentration decreases. When the concentration approaches zero, the molar conductivity of the solution is known as limiting molar conductivity, Ë°m.

How does equivalent conductance vary with dilution?

The equivalent conductance of strong electrolyte is increased by dilution, because its value is equal to the multiple of Kυ and the volume of solution. By making dilution the volume of solution increases which also increase the value of equivalent conductivity.

How does conductivity and molar conductivity vary with dilution for a strong electrolyte explain?

The molar conductivity of both, strong and weak electrolytes increases with dilution or the decrease in concentration of the electrolytic solution. As the dilution increase , the dissociation of the electrolyte increases, hence the total number of ions increases, therefore, the molar conductivity increases.

Why the molar conductivity of strong electrolytes does not vary much with dilution?

Molar conductivity of strong electrolytes: The curve obtained for strong electrolyte shows that there is only a small increase in conductance with dilution. This is because a strong electrolyte is completely dissociated in solution and so the number of ions remains constant.

How is molar conductance related to equivalent conductance?

Equivalent conductance and molar conductance of Fe2(SO4)3are related by relation: A. ∧eq=∧mB.

How do conductance equivalent conductance and molar conductance vary with dilution?

Upon dilution, specific conductance or conductivity decreases while molar conductivity increases. Conductivity is the conductance of one centimeter cube of the solution. The increase in volume on dilution is much more than the decrease in conductivity. As a result molar conductivity increases with dilution.

Does molar conductivity increases on dilution?

On dilution as volume of solution increases, thus number of ions per ml decreases and hence conductivity decreases. Hence when a solution is diluted, conductivity decreases and molar conductivity increases.

Is molar conductance and equivalent conductance same?

Conclusion. The conductivity of a volume of solution containing one equivalent of an electrolyte is called equivalent conductivity. The conductance property of a solution containing one mole of electrolyte, or a function of a solution’s ionic strength or salt concentration, is known as molar conductivity.

How does specific conductance decreases and equivalent conductance increases with dilution?

(i) Specific conductance decreases with dilution whereas equivalent conductance increases with dilution. When the solution is diluted the number of ions present in 1cm3 of solution decrease and as a result specific conductance decreases.

What is the effect on specific conductance on dilution?

The conductance of solution increases on dilution. The specific conductivity decreases on dilution. The equivalent conductivity and molar conductivity increases with dilution. The equivalent and molar conductivities tend to accumulate maximum value with increasing dilution.

How does molar conductivity vary with concentration for weak electrolyte class 12?

(i) Weak electrolytes: When the concentration of weak electrolyte becomes very low, its degree of ionisation rises sharply. There is sharp increase in the number of ions in the solution. Hence, the molar conductivity of a weak electrolyte rises steeply at low concentration.