Question

4) Calculate the molar solubility of the following compounds: a. CuCI, Ksp = 1.2x106 b. Mg(OH)2, Ksp = 8.9x10-12 c. Ag3PO4, Ksp = 1.8 x10-18 d. Rank these from least soluble to most soluble

Answer 1

4. (a) eccles) las 2 Ceet t s é et solubility s mon lit - espa [cat] [a-3 a sis as² or, 12x10- 6 5² or, Is=1.095810-3 moliti. -

reg@H)2 (5) Mg2+ + 20H- 25 I-5 leep 2 [Mg2+] [OH-3²=5.(25)² = 5.452 453 or, 8.9x10-12 = 453 or, 83=8.9810-12 4 wi sa ir 3058104 = 0.1305810-3 mollit- (C) - Ass Pous) ins Ž 3Ast+ Pops- 35 s esp = [ast] 3 [P063-] = (35)'s &s=275².5=2754 or, or, 1.8x1018 = 27ash s4=18x10.18 27 s = 1'60 x10-5 20.016 K10-3 malliini last soluld - most-soluble ce? < 802 26Q2 solubility increasen.