In ion exchanger effectiveness parameters, which statement is true about flow rate?

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Multiple Choice

In ion exchanger effectiveness parameters, which statement is true about flow rate?

Explanation:
Flow rate sets the time the solution spends in contact with the resin. In ion exchange, ions must diffuse into the resin beads and swap with ions already bound to the resin. If you push the solution through faster, the residence time is shorter, diffusion has less opportunity to occur, and the exchange process may not reach the level of completion needed. That means fewer ions are removed per pass and the breakthrough point occurs sooner, so the overall effectiveness declines. Slower flow increases contact time and can improve removal efficiency, though it lowers throughput. So, higher flow rate typically reduces, not improves, ion-exchange effectiveness.

Flow rate sets the time the solution spends in contact with the resin. In ion exchange, ions must diffuse into the resin beads and swap with ions already bound to the resin. If you push the solution through faster, the residence time is shorter, diffusion has less opportunity to occur, and the exchange process may not reach the level of completion needed. That means fewer ions are removed per pass and the breakthrough point occurs sooner, so the overall effectiveness declines. Slower flow increases contact time and can improve removal efficiency, though it lowers throughput. So, higher flow rate typically reduces, not improves, ion-exchange effectiveness.

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