Explanation:

Molar Conductance:
- Molar conductance is defined as the conductance of all the ions produced by dissolving one mole of an electrolyte in a solution.
- It is expressed in units of siemens per meter squared per mole (S m² mol⁻¹).
- Molar conductance decreases with dilution because as the solution is diluted, the number of ions per unit volume decreases, leading to a decrease in conductance.

Conductance:
- Conductance is the ability of a solution to conduct electricity.
- It is the reciprocal of resistance and is measured in siemens (S).
- Conductance decreases with dilution as the number of ions available to carry the current decreases, resulting in a decrease in conductance.

Specific Conductance:
- Specific conductance is the conductance of a solution of unit volume (usually 1 cm³) and is expressed in units of siemens per centimeter (S cm⁻¹).
- Specific conductance decreases with dilution because the number of ions available to carry the current decreases with dilution.

Equivalent Conductance:
- Equivalent conductance is the conductance of all the ions produced by one equivalent of an electrolyte in a solution.
- It is expressed in units of siemens per meter squared per equivalent (S m² eq⁻¹).
- Equivalent conductance decreases with dilution as the number of ions per equivalent decreases with dilution, leading to a decrease in conductance.

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