Chapter 21.3, Problem 18R

To determine

The process occurring when calcium phosphate breaks into $C{a}^{2+}andP{O}_4{}^{3-}$ .

Answer to Problem 18R

Dissociation takesplace, when calcium phosphatebreaks into $C{a}^{2+}andP{O}_4{}^{3-}$ .

Explanation of Solution

Dissociation is the process of separation of charged particles which already exist in the compound.

Ionization is formation of new charged particles which were absent in the previous compound.

${\left(C{a}^{2+}\right)}_3{\left(P{O}_4^{3-}\right)}_2\rightleftarrows 3C{a}^{2+}+2P{O}_4^{3-}$

This is the complete reaction of dissociation of calcium phosphate into $C{a}^{2+}andP{O}_4{}^{3-}$ .

Conclusion:

Dissociation takes place when calcium phosphatebreaks into $C{a}^{2+}andP{O}_4{}^{3-}$ .