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    In an ion exchange resin does the calcium displace the sodium or does the sodium displace the calcium?

    Sodium is more reactive than calcium so sodium takes calcium's place.

    Please provide an explanation.

    Thanks.
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    Also, how does the sodium turn into an ion?
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    (Original post by zed963)
    In an ion exchange resin does the calcium displace the sodium or does the sodium displace the calcium?

    Sodium is more reactive than calcium so sodium takes calcium's place.

    Please provide an explanation.

    Thanks.
    sodium IONS are less reactive then calcium IONS. The stability of an ion is inversely proportional to the element.

    When ion exchange takes place it is usually a concentration effect. If the resin is packed with sodium ions then they will replace calcium ions and vice versa.
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    (Original post by charco)
    sodium IONS are less reactive then calcium IONS. The stability of an ion is inversely proportional to the element.

    When ion exchange takes place it is usually a concentration effect. If the resin is packed with sodium ions then they will replace calcium ions and vice versa.
    I haven't come across the stuff in bold, can you explain it please.

    In regards to the concentration effect, if there are more calcium/magnesium ions in the water than there are sodium in the resin, the calcium will go straight to the resin because there's more of it. Is that correct?
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    (Original post by zed963)
    I haven't come across the stuff in bold, can you explain it please.

    In regards to the concentration effect, if there are more calcium/magnesium ions in the water than there are sodium in the resin, the calcium will go straight to the resin because there's more of it. Is that correct?
    Something reactive will make something much more stable when it reacts. Sodium is reactive and when it reacts it makes sodium ions which are unreactive.

    The concentration of sodium ions in the resin is massively high, much higher than the concentration of calcium in the water. As the calcium ions pass through the resin they are replaced by sodium ions.
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    (Original post by charco)
    Something reactive will make something much more stable when it reacts. Sodium is reactive and when it reacts it makes sodium ions which are unreactive.

    The concentration of sodium ions in the resin is massively high, much higher than the concentration of calcium in the water. As the calcium ions pass through the resin they are replaced by sodium ions.
    So the sodium ions displace the calcium/magnesium ions?
 
 
 
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