For the concentration of Na in M when it begins to crystallize out of the solution is mathematically given as
Na+ = 0.125M
Generally, the equation for the Ksp of the solution is mathematically given as
Na⁺+CL⁻
Ksp = SxS
53.9 = s^2
S = 7.34
Molar mass Nacl 58,44
Solubility = 7.34/58.44
Solubility = 0.125M
In conclusion, the concentration of Na in M when it begins to crystallize out of the solution
Na+ = 0.125M
Read more about Ksp
https://brainly.com/question/7185695