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Which compound is added to the cation exchanger in back flow?

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Which compound is added to the cation exchanger in back flow?

(a) Weak acid

(b) Strong acid

(c) High basic solution

(d) Low basic solution

This question was posed to me during an interview for a job.

Enquiry is from Inorganic Chemical in division Inorganic Chemical Industries of Chemical Technology

1 Answer

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Best answer
Correct choice is (b) Strong acid

Best explanation: In ion-exchange process, when the exchange capacity of the resin has been exceeded, the activity of the ion exchange resin can be readily regenerated by forcing the reverse reaction to occur. Strong acid is added to the cation exchanger in back flow and highly basic solution is added to the anion exchange resin.

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