Question

Explain the factors on which affect transport number.
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Answer 1

Rise in temperature is the main factor that affects atransport number. With a rise in temperature, thetransport number or transference number of cation and anion comes closer to 0.5.

Answer 2

Factors on which transport depends are as follows.

- Transport number changes with change in concentration of ions into the solution.

- With increase in temperature there will occur increase in transport number of cation and a decrease in the transport number of anion.

- A transport number greater than 0.5 decreases with increase in temperature.

Explanation:

Transport number is defined as the fraction of total current carried by an ions present in a solution. Transport number of cation is represented by $t_{+}$ and transport number of anion is represented by $t_{-}$.

Factors on which transport depends are as follows.

• Transport number changes with change in concentration of ions into the solution.

• With increase in temperature there will occur increase in transport number of cation and a decrease in the transport number of anion.

• A transport number greater than 0.5 decreases with increase in temperature.

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