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  • The reagent does not used for softening the frequency of the temporary hardness of water is-Option: 1 <img alt="\mathrm{Ca}_3\left(\mathrm{PO}_4\righ

The reagent does not used for softening the frequency of the temporary hardness of water is-

Option: 1

\mathrm{Ca}_3\left(\mathrm{PO}_4\right)_2


Option: 2

\mathrm{Ca}(\mathrm{OH})_2


Option: 3

\mathrm{Na}_2 \mathrm{CO}_3


Option: 4

\mathrm{NaOCl}


Answers (1)

best_answer

\mathrm{Ca}\left(\mathrm{OH})_2+\mathrm{Ca(HCO}\right)_2 \longrightarrow 2 \mathrm{CaCO}_3 \downarrow+2 \mathrm{H}_2 \mathrm{O}

\mathrm{\mathrm{NaOCl}+\mathrm{H}_2 \longrightarrow \mathrm{NaOH}+\mathrm{HOCl} }

\mathrm{HO}^{-}+\mathrm{HCO}_3- \longrightarrow \mathrm{CO}_3^{2-}+\mathrm{H}_2 \mathrm{O}

\mathrm{\mathrm{Ca}\left(\mathrm{HCO}_3\right)_2+\mathrm{Na}_2 \mathrm{CO}_3 } \longrightarrow \mathrm{CaCO}_3 \downarrow+2 \mathrm{NaHCO}_3

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Riya

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