Answered: involve titrating a 100.0 mL sample of…

involve titrating a 100.0 mL sample of 0.18 M HClO4 is titrated with 0.27 M NaOH 49) Determine the pH of the solution after the addition of 66.67 mL of NaOH. A. 0.97B. 13.03C. 2.76 D. 11.24 E. 7.00

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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Consider a strong acid-weak base titration between 0.250 M HNO3 and NH3. a. The volume of HNO3 added at the equivalence point is 20.50 mL. Calculate the number of moles of HNO3 used in the titration. 5.125e-3 b. Calculate the number of moles of NH3 in the flask 5.125e-3 c. Find the concentration of NH3 in the solution, if 25.00 mL of NH3 is used in the titration. 0.205 mol L-1 d. What is the species present at the equivalence point? e. Find the concentration of the salt present at the equivalence point. f. The Kh of NH3 is 1.8 x 10-5. What is the Ka of NH4*?| g. Find the concentration of H* at the equivalence point. h. Calculate the pH and pOH of the solution at equivalence point pH = pOH = |
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1.0 L of a buffer solution is created which is 0.363 M in hydrocyanic acid, HCN, and 0.303 M sodium cyanate, NaCN. Ka for HCN = 4.0 × 10-10 What is the pH after 0.107 mol of NaOH is added to the buffer solution? O a. 9.928 O b.9.602 O c. 9.319 O d. 9.193 O e. 9.398
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Consider Titration of 25 mL of .1 M CH3CO2H With .1 M NaOH. Calculate The pH After Adding The Following Volumes of NaOH: a. 0 mL b. 12.5 mL c. 20 mL d. 25 mL e. 37.5 mL I do know the correct answers, I just don't how to get to the answers. a. pH = 2.87 b. pH = 4.74 c. pH = 5.34 d. pH = 8.72 e. pOH = -log (0.0192 M) = 1.72 14 - 1.72 = 12.28 (I been having a hard time people getting the correct answer for part e, people keep getting 12.30 as the answer, but it is not. The correct answer is 12.28. I only remember how to do the last steps to get part e answer, which is 12.28, as it can be seen).