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What do the fractions of conductance for specific ions represent in the parallel conductance eqtn?

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Final answer:

The fractions of conductance for specific ions in the parallel conductance equation indicate the proportion of total electrical conductivity attributable to each ion, with ions of higher charges generally contributing more to total conductance.

Step-by-step explanation:

The fractions of conductance for specific ions in the parallel conductance equation represent the proportion of the total electrical conductivity of a solution that each ion contributes. In a circuit with parallel resistors, each resistor receives the full voltage and the total current flowing through the circuit is the sum of the individual currents through each resistor.

Conductivity measurements confirm the characteristic properties of each ion type in solution, indicating that ions with higher charges typically contribute more to the total conductance. Electrolytes of different types can have different conductances; for instance, 1:1 electrolytes like NaCl usually conduct about half as much current as 2:2 electrolytes.

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