Unit of Equivalent Conductivity: Overview, Questions, Preparation

Updated on Aug 25, 2021 02:40 IST

Table of content

Equivalent Conductivity
Conductivity Formula
Unit of Equivalent Conductivity in Class 12
Illustrated Examples
FAQs

Equivalent Conductivity

The equivalent conductance is known as the conductance of a volume of solution, which, when placed between two parallel electrodes 1 cm apart, contains an equivalent weight of the dissolved material and is large enough to contain all the solution between them.

It is described by dissolving one gram equivalent of an electrolyte in the solution as the conducting power of all the ions formed.

It is expressed as particular actions and is related to it as:

k*1000/M (M is Solution Molarity),

where C is the per litre concentration of gram equivalent (or Normality). This word has been used very widely before. It is now superseded by molar conductance. The equivalent conductance units are ohm-1cm-1.

Equivalent conductance can be calculated as:

Equivalent conductance = (molar conductance)/n,

Where n = (molecular mass)/(equivalent mass).

Conductivity Formula

It is possible to characterise the term ‘equivalent conductance’ as the net conductance of any ion formed from one gram equivalent of a given material. It can be determined using the following formula: λ = kV; where a volume (in millilitres) containing one gram equivalent of the electrolyte given is denoted by the word ‘V.’ Molar conductance is another related concept, which can be defined as the net conductance of all the ions formed when one mole of an electrolyte undergoes maximum dissociation into its constituent ions. The molar conductance formula is somewhat similar to that of equal conductance, but the symbol ‘μ’ signifies it.

Unit of Equivalent Conductivity in Class 12

In the chapter ‘Electrochemistry,’ you will learn about the terms conductance, equivalent conductivity, molar conductivity, and many others, along with their units. The weightage of this chapter is 5-6 marks. This is one of the important chapters from a competitive examination point of view.

Illustrated Examples

The amount of p-aminophenol provided when 9.65-ampere current was transferred to nitrobenzene in an acidic medium for 1.0 hours is:

W = ZIt

W = 100*9.65*60*604*96500

W = 9.81 gm.

A galvanic cell transforms the energy released by a spontaneous redox reaction into electrical energy that can be used to perform work. In a galvanic cell, electrons flow from?

Electrons in the galvanic cell flow through the external circuit from the negative pole (anode) to the positive pole (cathode).

Ostwald’s rule on dilution is only applicable to?

In the case of a weak electrolyte, according to Ostwald’s dilation theorem, the degree of ionisation is inversely proportional to the square root of the molar concentration or directly proportional to the amount of the square root comprising one mole of the solvent.

FAQs

Q: What is the equivalent-conductivity unit?

A: S/m or S/cm is the unit of conductivity. The sum of gram equivalents per unit volume is one gram equivalent of a material.

Q: What is the equivalent conductance symbol?

A: The volume of a solution containing one electrolyte equivalent is known as the conductivity equivalent. It is denoted by alpha. Its conductance is equal to the conductance relative, etc.

Q: What is the equivalent-conductivity formula?

A: It can be determined using the following formula: λ = kV; where a volume (in millilitres) containing one gram equivalent of the electrolyte given is denoted by the word ‘V.’

Q: What are molar conductivity and conductivity equivalence?

A: The volume of a solution containing one electrolyte equivalent is known as the conductivity equivalent. It is denoted by alpha. Molar conductivity is characterised as a solution containing one mole of an electrolyte. It is denoted by · m or μ.

Q: What is the distinction between conductance equal and conductivity equivalent?

A: Equal Conductance is the conductance of solution ions found in Vcm^3 representing 1 gm electrolyte equivalent, while equivalent conductivity is the basic case for unit length.