Hint 11-61
Read Section 18.4.
Write down the balanced equation starting from AgBr(s).
The molar solubility is the concentration of either the cation
or the anion (the moles of the solute that dissolve per litre
to form a saturated solution).
Ksp = [cation]c[anion]d
(N.B. you may have to use the square root button on your calculator)