9. From the list of salts below, how many are considered soluble at 25C ? a) zero b) one c) two d) three 10. The Ksp expression for a saturated solution Ca3(PO4)2 is a) Ksp=[Ca2+][PO43] b) Ksp=[Ca2+]3[PO43]2 c) Ksp=[3Ca2+][2PO43] d) Ksp=[3Ca2+][2PO43] 11. Calculate the Ksp for AlCl3 if 100.0g is required to saturate 150mL of a solution. a) 1.7104 b) 1.9106 c) 4.5105 d) 6.2103 12. The solubility of PbS is 2.91014M. What is the value of the Ksp ? a) 8.41028 b) 2.91014 c) 5.81014 d) 1.7107 13. The relationship between the solubility and the size of the Ksp is: a) there is no relationship b) the smaller the Ksp the greater the solubility c) the greater the Ksp the greater the solubility d) the solubility is always the square root of the Ksp 14. A precipitate forms when the trial ion product is: a) larger than the Ksp b) equal to the Ksp c) smaller than the Ksp d) equal to 1 logs t 15. A precipitation reaction is a: a) synthesis reaction b) decomposition reaction c) single displacement reaction d) double displacement reaction 16. Which of the following occurs when equal volumes of 0.20MMgSand0.20MZnSO4 are mixed? a) A precipitate does not form b) A precipitate of ZnS forms c) A precipitate of MgSO4 forms d) Precipitates of MgSO4 and ZnS form 17. In the following reaction, is H2PO4acting as a base or acid? Choose the best answer. H2PO4(oq)+H2O(1)H3PO4(aq)+OH(aq)1 a) a base because it accepts a proton b) a base because it donates a proton c) an acid because it donates a proton d) an acid because it accepts a proton 18. Which of the following is the conjugate base partner to HSO41 ? a) PO43 b) OH1 c) SO42 d) No match exists 19. For the following reaction, choose the answer which best identifies each substance as a BrnstedLowry acid or Brnsted-Lowry base and as a conjugate acid or conjugate base. (CH3)3N(aq)+H2O(I)(CH3)3NH+(aq)+OH(aq) a) acid + base conj. base + conj. acid b) base + acid conj. base + conj. acid c) base + acid conj. acid + conj. base d) acid + base conj. acid + conj. base 20. What does it mean to be amphiprotic / amphoteric? a) contain more than one H+ b) can act like an acid or a base depending on the reaction c) can dissociate in water d) contain more OHthan H+ dags t 21. For phosphoric acid, H3PO4, the Ka expression of the first dissociation is: a) [PO43][H1+]3/[H3PO4] b) [HPO42][H1+]/[H3PO4] c) [H2PO41][H1+]/[H3PO4] d) [H3PO4]/[H2PO41][H1+] 21. For phosphoric acid, H3PO4, the Ka expression of the first dissociation is: a) [PO433][H1+]3/[H3PO4] b) [HPO42][H1+]/[H3PO4] c) [H2PO41][H1+]/[H3PO4] d) [H3PO4]/[H2PO41][H1+] 22. Which of the following best describes a strong acid? a) produces many OHions b) produces many H+ions c) produces few OHions d) produces few H+ions 23. Which of the following describes a weak base? a) produces a partial ionization of solution b) equilibrium lies to the left c) small Kb d) all of the above 24. Kw is which of the following? a) the equilibrium constant for water b) 1.01014@25C c) both a and b d) none of the above 25. What is the pH of a solution containing 1.50103MHCl ? a) 2.82 b) 6.43 c) 11.2 d) 12.9 26. What is the pH given [OH]=8.001011M ? a) 3.90 b) 7.00 c) 10.1 d) 12.9 27. Given pH=8.3, what is the [H+]? a) 8.31010M b) 5.0109M c) 2.0108M d) 4.61011M 28. Given pOH=5.2, the solution must be: a) acidic b) neutral c) basic d) pH=7