Tty University of New Yok 1 30)What is the pH of a 0.015-M aqueous sojution of barium hydroxide? 12.18 b. 1.52 c. 1.82 d. 10.35 e. 12.48 31)Calcium hydroxide and lead chloride both have limited solubility in neutral water. When acid is added, the solubility of calcium hydroxide goes way up, but that of lead chloride doesn’t change. Which statement explains the acid impact? Ca[OH)2(s) PbC2(s) HO-(aq) + H+ (aq) -Ca 2. (aa) + 2 HO-(aq) Pb 2. (aq) + 2 Cl-(aq) Kx4.7 x 10-6 Ke1.6 x 10-5. – H2O (l) → Acid reacts with the calcium ions that are produced. Acid increases the solubility of any slightly-soluble solid. a. b. c. d. Lead chloride has a higher dissociation constant than calcium hydroxide. Acid reacts with the hydroxide that is produced from calcium hydroxide. 32)If the equilibrium is established by initially adding 0.10 mol each of A and B to a 1L container, then which of the following must be true once the mixture achieves equilibrium? K 320 [A]=[B] a. 33)Histidine is an amino acid (chemical building blocks of protein structure. The structure has 3 sites where acid-base reaction can occur. Relevant pKa values are indicated below on the fully protonated structure. Given what you have learned about acid-base reactions and buffering range, Answer the following GenChem2 Summer 2017 Exam 1 Version B
Acid reacts with the OH- ion, thus reaction shifts towards right.
[A]>[B], because coefficient of B is greater than A.