Solubility:
1.) Silver Bromide, AgBr, is the light-sensitive compound used in nearly all
photographic film. The molar solubility of AgBr is 7.1 x 10-7 mol L-1 at 25
degrees C. Calculate the Ksp for AgBr at this temperature. 5.0x10-13
2.) The molar solubility of silver chromate, Ag2CrO4, in water is 6.7 x 10-5 mol L-1
at 25 degrees C. What is Ksp for Ag2CrO4, assuming 100 % dissociation? 1.1 x
10-12
3.) The molar solubility of PbCl2 in a 0.10 M NaCl solution is 1.7x10-3 mol L-1 at
25 degrees C. Calculate the Ksp for PbCl2 1.7 x 10-5
4.) What is the molar solubility of AgCl in pure water at 25 degrees C? Ksp = 1.8
x 10-10 1.3x10-5 M
5.) Calculate the molar solubility of lead iodide, PbI2, from its Ksp in water at 25
degrees C. Ksp=7.9x 10-9 1.3x10-3 M
6.) What is the molar solubility of PbI2 in a 0.10 M NaI solution? 7.9x10-7 M
7.) A student wished to prepare 1.0 L of a solution containing 0.015 mol of NaCl
and 0.15 mol of Pb(NO3)2. Knowing from the solubility rules that the chloride
of Pb2+ is “insoluble”, there was concern that a precipitate of PbCl2 might
form. Will it? Ion product=3.4x10-5, Ksp is smaller, so precipitate will
form