Relating ion concentrations and solubilities
The relationship between the change in concentration of ions as a consequence of dissolution and the solubility of an ionic solid can be summarized using the relationship below.
This relationship is the same as that between amounts in moles of substances in balanced equations used in stoicheiometry problems.
This relationship is the same as that between amounts in moles of substances in balanced equations used in stoicheiometry problems.
For the reaction aA + bB → cC + dD
where A, B C and D are substances and
a, b, c and d are coefficients required for balancing
Thus for AgI(s)
Ag+(aq) + I–(aq)
where A, B C and D are substances and
a, b, c and d are coefficients required for balancing
| n(A) | = | n(B) | = | n(C) | = | n(D) |
| a | b | c | d |
Thus for AgI(s)
Ag+(aq) + I–(aq) | s(AgI) | = | Δ[I–] | = | Δ[Ag+] | |
| 1 | 1 | 1 | |||
| Δ is the Greek letter delta meaning change in | |||||