Determine the Kb for cocaine (a base). To do this, construct an ICE table to determine concentrations (Part 1), and then use this information to construct and solve the equilibrium constant expression (Part 2). Complete Parts 1-2 before submitting your answer. NEXT > The pH for 6.1 x 10 M solution of cocaine, a weak base, is 9.60. Let cocaine be represented by the generic base, B. Fill in the ICE table with the appropriate value for each involved species to determine the unknown concentrations of all reactants and products. B(aq) H2O(1) OH (aq) +. BH (aq) 1. Initial (M) Change (M) Equilibrium (M) 5 RESET 6.1 * 10* 9.60 2.5 10 -2.5 x 10 4.0 x 10 -9.60 4.0 10 2.1 x 10 -2.1 * 10* 5.7 x 10 -6.7 x 10

Determine the Kb for cocaine (a base). To do this, construct an ICE table to determine concentrations (Part 1), and then use this information to construct and solve the equilibrium constant expression (Part 2). Complete Parts 1-2 before submitting your answer. NEXT > The pH for 6.1 x 10 M solution of cocaine, a weak base, is 9.60. Let cocaine be represented by the generic base, B. Fill in the ICE table with the appropriate value for each involved species to determine the unknown concentrations of all reactants and products. B(aq) H2O(1) OH (aq) +. BH (aq) 1. Initial (M) Change (M) Equilibrium (M) 5 RESET 6.1 * 10* 9.60 2.5 10 -2.5 x 10 4.0 x 10 -9.60 4.0 10 2.1 x 10 -2.1 * 10* 5.7 x 10 -6.7 x 10

Chemistry: An Atoms First Approach

2nd Edition

ISBN:9781305079243

Author:Steven S. Zumdahl, Susan A. Zumdahl

Publisher:Steven S. Zumdahl, Susan A. Zumdahl

Chapter13: Acids And Bases

Section: Chapter Questions

Problem 9RQ: What is a salt? List some anions that behave as weak bases in water. List some anions that have no...

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Calculate the pH of each of the following solutions. (a) 10.0 mL of 0.300 M hydrofluoric acid plus 30.0 mL of 0.100 M sodium hydroxide (b) 100.0 mL of 0.250 M ammonia plus 50.0 mL of 0.100 M hydrochloric acid (c) 25.0 mL of 0.200 M sulfuric acid plus 50.0 mL of 0.400 M sodium hydroxide
What is a salt? List some anions that behave as weak bases in water. List some anions that have no basic properties in water. List some cations that behave as weak acids in water. List some cations that have no acidic properties in water. Using these lists, give some formulas for salts that have only weak base properties in water. What strategy would you use to solve for the pH of these basic salt solutions? Identify some salts that have only weak acid properties in water. What strategy would you use to solve for the pH of these acidic salt solutions? Identify some salts that have no acidic or basic properties in water (produce neutral solutions). When a salt contains both a weak acid ion and a weak base ion, how do you predict whether the solution pH is acidic, basic, or neutral?
Write the appropriate equilibrium expression, set up an ICE table, solve for “x” and then proceed to calculate the concentration of all species at equilibrium. Calculate the pH of each solution. You will need to look up the appropriate ionization constants, Ka or Kb, in your book. Indicate whether the 5% rule can be applied and, if not, be sure to solve using the quadraticequation. Recalculate Ka or Kb to check.(a) 0.0092 M HClO, a weak acid (c) 0.0810 M HCN, a weak acid(b) 0.0784 M C6H5NH2, a weak base (d) 0.11 M (CH3)3N, a weak base
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Find the pH of the solution containing 0.04 M H3PO4 without neglecting it. (Ka1= 7x10-3, Ka2= 2.2x10-7, Ka3= 4.5x10-13) Note: Write the relevant equilibrium reaction, state the equilibrium constant.
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The pH for 0.185 M solution of an unknown weak base, B, is 12.95. Determine the value of Kb for the unknown base. Let cocaine be represented by the generic base, B. Based on the given values, fill in the ICE table to determine concentrations of all reactants and products. Based on your ICE table and definition of Kb, set up the expression for Kb and then evaluate it. Do not combine or simplify terms.