What is the preferred regenerant in case of cation exchanger?

1.	What is the preferred regenerant in case of cation exchanger?
A.	HCl
B.	H<sub>2</sub>SO<sub>4</sub>
C.	H<sub>2</sub>CO<sub>3</sub>
D.	HF
Answer» B. H<sub>2</sub>SO<sub>4</sub>

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