Question & Answer: City University of New York Department of Chomistry Multiple Choice Questions: (15.6 pts…..

City University of New York Department of Chomistry Multiple Choice Questions: (15.6 pts each) 1) What is the [OH-] of a solution with a pH of 9.07 a. 1 x 10-9M b. 1x 10-4 M c 1 x 10-S M d. 1 x 10-7 M e. none of the above For the following hypothetical equilibrium, what is the value of the equilibrium constant if the concentrations at equilibrium are as shown? 2) Equilibrium Concentrations (M): A-45×10sB+2.2 × 10-2 a. 0.22 b. 4.3 x 105 c. 2.3 x 10 d. 9.9 e. 9.5×103 C= 9.4 x 10-3 K=77 3) Which one of the following will change the value of an equilibrium constant? a. changing temperature b. adding a catalyst c. varying the initial concentrations of reactants d. varying the initial concentrations of products e. changing the volume of the reaction vessel 4) For the following reaction, a. H2PO4-and NH3 b. H2POs-and HPO42 C. HPO42 and NH4 d. None of the above 5) Daring a titration what voe of o.0M KOtHlis necessary to compleely 10.0mL of 2.00M CH COOH? a. 10.0mL b. 40.0mL 25.0mL GenC hem2 Sunmer 201 Exam 1 Vension B