Which one of the following is used for reviving the exhausted permutit?

Question

Which one of the following is used for reviving the exhausted permutit? (A)  textHCl solution (B)  text10 ! !% ! ! text textCaC textl text2 solution (C)  text10 ! !% ! ! text textMgC textl text2 solution (D)  text10 ! !% ! ! text NaCl solution

Tardigrade Admin · Accepted Answer

During the softening process the reaction takes place as: Na2Ze+CA(HCO3)2 xrightarrowCaZe +2NaHCO3 Na2Ze+Mg(HCO3)2 xrightarrowMgZe +2NaHCO3 After sometime, the zeolite is completely converted into calcium and magnesium zeolites. Eventually, the bed ceases to soften water i.e., it gets exhausted. At this stage the supply of hard water is stopped and the exhausted zeolite is reclaimed by treating the bed with a 10% NaCI solution (Brine soln.) when the following reaction takes place: CaZe or MgZe+2NaCl xrightarrow underset textReclaimed textzeolite mathopNa2Ze +CaCl2 or MgCl2

Q. Which one of the following is used for reviving the exhausted permutit?

$HCl$ solution

$10$ solution

$10$ solution

$10$ solution

Q. Which one of the following is used for reviving the exhausted permutit?

HCl solution

10 solution

10 solution

10 solution

$HCl$ solution

$10$ solution

$10$ solution

$10$ solution