Download Weakest Conjugate Base - General Chemistry - Solved Quiz and more Exercises Chemistry in PDF only on Docsity! 1. (4 points) Using 1 – 4, organize the species in this group from the strongest acid (1) to weakest acid (4). H2S [Pb(H2O)6]2+ HNO2 H2PO41- 2 4 1 3 2. (4 points) Using 1 – 4, organize the species in this group from which produces the strongest conjugate base (1) to which produces the weakest conjugate base (4). HSO41- HClO [Al(H2O)6]3+ H2PO41- 4 1 3 2 3. (6 points) Will each of these salts form an acidic, basic, or neutral solution when dissolved in water? BASIC Na2S ACIDIC NaH2PO4 BASIC NaF NEUTRAL K2SO4 ACIDIC AlCl3 BASIC LiC6H5CO2 4. (3 points) Circle the species in each group of acids that will produce the weakest conjugate base. HCl HBr HI H2O H2Se H2S HMnO4 HMnO3 HMnO2 5. (4 points) Write the appropriate equilibrium constant expression for each of the reactions below. a. CH4(g) + 2 H2O(g) ↔ 4 H2(g) + CO2(g) (write an expression for Kp) b. C(s) + 2 H2(g) ↔ CH4(g) (write an expression for Kc) 2 OHCH CO 4 H p 24 22 PP PP × × =K 2 2 4 c ][H ][CH (g) (g)K = Docsity.com 6. (8 points) Select the answer from the column on the right that best matches each description from the column on the left. Each answer can be used, at most, only once. _ H___ This equilibrium constant describes a system that is heavily product-favored A. exothermic __ F __ The equilibrium constant for an reaction will increase as you raise the temperature. B. concentration __G __ Removing some of the reactants of a reaction at equilibrium will cause it to shift in this direction C. K << 1 __C __ This equilibrium constant describes a system that is strongly reverse-reaction favored D. reactant __B __ A change in will not change the size of equilibrium constant of a reaction. E. temperature __ I___ A reaction proceeds in this direction when its current value of Q is less than its Keq F. endothermic __A___ The equilibrium constant for an reaction will increase as you lower the temperature. G. reverse __D___ When the reaction quotient is greater than the equilibrium constant a system is -favored H. K >> 1 I. forward J. product 7. (5 points) Consider the equilibrium below. Indicate whether each of the stresses listed will cause the system to shift to the right (favor the products), left (favor the reactants), or have no effect. 2 SO2(s) + O2(g) ↔ 2SO3(g) ΔHrxn = -198 kJ/mol left increase the temperature right add more oxygen right remove some of the SO3 by condensing it right increase the volume of the reaction chamber no effect add more sulfur dioxide Docsity.com
