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  • What type of ions are exchanged with hydroxide ions <img alt="\left(\mathrm{OH}^{-}\right)" src="https://entrancecorner.oncodecogs.com/gif.latex?%5Cleft%28%5Cmathrm%7BOH%7D%5E%7B-%7D%5Cright%2

What type of ions are exchanged with hydroxide ions \left(\mathrm{OH}^{-}\right) by anion exchange resins?

Option: 1

 Calcium ions \left(\mathrm{Ca}^{2+}\right) and magnesium ions \left(\mathrm{Mg}^{2+}\right)


Option: 2

Chloride ions \left(\mathrm{Cl}^{-}\right) and sulfate ions \left(\mathrm{SO}_4{ }^{2-}\right)


Option: 3

Sodium ions \left(\mathrm{Na}^{+}\right) and potassium ions \left(\mathrm{K}^{+}\right)


Option: 4

Hydrogen ions \left(\mathrm{H}^{+}\right) and carbonate ions \left(\mathrm{CO}_3{ }^{2-}\right)


Answers (1)

best_answer

Anion exchange resins. These resins contain basic groups such as \mathrm{{OH}^{-}} ions usually in the form of substituted ammonium hydroxides attached to giant hydrocarbon frame work (R).
These may be represented by the general formula \mathrm{R}-\stackrel{+}{\mathrm{N}} \mathrm{H}_3 \mathrm{OH}^{-}. Since these resins can exchange ions with anions such as \mathrm{Cl}^{-}$and $\mathrm{SO}_4{ }^{2-} ions present in hard water, water becomes free from anions by treatment with anion exchangers.

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avinash.dongre

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