So to calculate pAg, it's the negative log of the molar concentration of silver. In the SRAD formula posted, it's 130 g Ag to 500 ml water. That's .769 Mol Ag, and 27.7 Mol water, or a concentration of .027, for a pAg of 1.557?

if We dump that into a liter of water, with other items, and that gives us .769 mol Ag in 83.1 Mol water, or a concentration of .00923, pAg of 2.03.

Now does this change as the items react? ( I guess it would since the Agbr is insoluble)

If so, can we calculate how fast?