Which ions are removed by zeolite water softening?

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Multiple Choice

Which ions are removed by zeolite water softening?

Explanation:
Zeolite softening works through ion exchange. The resin has sites that attract calcium and magnesium ions from the water and release sodium (or potassium) ions in their place. This swap removes Ca2+ and Mg2+—the ions responsible for water hardness—from the water, yielding softer water. Chloride and sulfate are anions and aren’t targeted by this exchange process, so they aren’t removed by zeolite softening. Iron and manganese can be addressed by other treatment steps or special conditions, but they’re not the primary ions removed in standard zeolite softening.

Zeolite softening works through ion exchange. The resin has sites that attract calcium and magnesium ions from the water and release sodium (or potassium) ions in their place. This swap removes Ca2+ and Mg2+—the ions responsible for water hardness—from the water, yielding softer water. Chloride and sulfate are anions and aren’t targeted by this exchange process, so they aren’t removed by zeolite softening. Iron and manganese can be addressed by other treatment steps or special conditions, but they’re not the primary ions removed in standard zeolite softening.

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