A concentration of 10-100 parts per billion (by mass) of Ag⁺ is an effective disinfectant in swimming pools. How-ever, if the concentration exceeds this range, the Ag⁺ can cause adverse health effects. One way to maintain an appropriate concentration of Ag⁺ is to add a slightly soluble salt to the pool. Using IS, values from Appendix D, calculate the equilibrium concentration of Ag⁺ in parts per billion that would exist in equilibrium with

(a) AgC1,

(b) AgBr,

(c) AgI.