I need help with 2 Solutions that contain a weak acid, HA, and itsconjugate base, A¯, are called buffer solutionsbecause they resist drastic changes in pH. When asolution contains a weak acid and its conjugate baseor a weak base and its conjugate acid, it will be abuffer solution. For buffers containing a weak acid,the principal reaction isHA(aq) + H20(1) = H30*(aq) +A (aq)Unbuffered, a weak acid would ionize and the netreaction would proceed forward to reach equilibrium.However, when a significant amount of conjugatebase is already present, the extent of the netreaction forward is diminished. Thus, equilibriumconcentrations of HA and AT are approximatelyequal to their initial concentrations. Visualizing buffersYou can visualize a buffer solution containing approximately equal concentrations of HA and A in action using the followingequation, where Ka is the equilibrium constant:H3O" |[A ][HAHAK.H;O] = K.[A"]When the concentrations of HA and Aconcentration negligibly. The result is that the ratio (HA]/[A ] maintains a value approximately equal to 1, and the [H3O*] isapproximately equal to the Ka value under buffer conditions.are relatively large, the addition of a small amount of acid or base changes theirPart ACalculate the pH of the solution made by adding 0.50 mol of HOBr and 0.30 mol of KOBR to 1.00 L of water. The value ofKa for HOBr is 2.0 x 10-Express your answer numerically using two decimal places.• View Available Hint(s)AZO?pH =SubmitPrevious Answers

HOBr(aq)⇌H+(aq)+OBr−(aq) The expression for Ka is Ka=[H+(aq)]*[OBr−(aq)]/[HOBr(aq)] These are…

Calculate the pH of the solution made by adding 0.50 mol of HOBR and 0.30 mol of KOBR to 1.00 L of water. The value of Ka for HOBr is 2.0 x 10-9 Express your answer numerically using two decimal places. • View Available Hint(s) pH =

Calculate the pH of the solution made by adding 0.50 mol of HOBR and 0.30 mol of KOBR to 1.00 L of water. The value of Ka for HOBr is 2.0 x 10-9 Express your answer numerically using two decimal places. • View Available Hint(s) pH =

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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