OK, Number 34 on the regional test has me stumped. I got it right, but I'm not sure if my logic was correct or if I was just lucky. Can somebody walk me through it?
34. Solid AgNO3 is slowly added to a solution containint 0.0010 M each of NaCl and NaBr. What concentration of Br- would remain in solution when AgCl begins to precipitate? The solubility product constant for AgCl is 1.8*10^-10 and that of AgBr is 3.3*10^-13.
Correct answer is 1.8*10^-6
Thanks a lot!!!