Hard water when passed through ion exchange resin containing RCOOH gro – InterviewSolution

1.	Hard water when passed through ion exchange resin containing RCOOH group, becomes free from
Answer» `CL^(-)` `SO_(4)^(2-)` `H_(3)O^(+)` `Ca^(+2)` SOLUTION :`RCOOH`- Cation EXCHANGER. Replaces `Ca^(2+)` ION

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