1)(HOCI/OCH) sytem at ClT = 103 M. Use the diagram to determine the following information. Labelthe positions on the graph where the answers occur. Note: this diagram comes from p. 260 in thetextbook.The predominance diagram (log C-pH) below is for the hypochlorous acid-hypochloritea) the activities of HOCI and OCt at pH = 6b) the activities of HOCI and OCt at pH = 10c) an estimate for the pKa of HOCI. Be sure to justify your answer with the appropriate equation(s) andexplanation.PH3.04.05.06.07.08.09.010.011.0-2(HOCI][OCI")(OH 1-6-8-10-12

Given is the predominance diagram for hypochlorous acid/hypochlorite system.

Answered: 1) (HOCI/OCH) sytem at CIT = 103 M. Use…

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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In the laboratory, a general chemistry student measured the pH of a 0.545 M aqueous solution of codeine, C18 H21 O3N to be 10.856. Use the information she obtained to determine the K, for this base. Kb (experiment) = Submit Answer Retry Entire Group 9 more group attempts remaining
Which of the following statements is incorrect? O The pH of a 0.1 M solution of Ca(OH)2 is equal 1.0 O All hydrogen halides (HF, HCI, HBr, HI) ionized completely in water except HF O In a neutral solution always [H30*] = [OH ] %3D O The basicity of G2A hydroxides increases down the group Next page uncements Jump to...
Question 3 A pH meter is an instrument used to measure acidity or alkalinity of a solution - also know as pH. pH is the unit of measure that describes the degree of acidity or alkalinity. It is measured on a scale of 0 to 14. Discuss in detail TWO types of invention that can be use to measure pH either quantitative and qualitative in the laboratory setting. List down their advantage, disadvantage, and their possible limitations.
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Consider 0.1 M aqueous solutions of the hypobromous acid, HBrO, and nitrous acid, HNO2, below. Which of the given statements is FALSE? HBrO : Ka = 2 × 10–9 HNO2 : Ka = 4.5 × 10–4 Select one: a.The [BrO–] in the HBrO solution is less than the [NO2–] in the HNO2 solution. b.The pH of the HNO2 solution is greater than the pH of the HBrO solution. c.The concentration of OH– ions is greater in the HNO2 solution. d.Hypobromous acid is a weaker acid than nitrous acid.
Consider three solutions A – C of the following substances, all at a total or initial concentration of 0.100 M. Which of the following statements are true? Select all that apply. A H3PO4(aq)B NaH2PO4(aq) C Na2HPO4(aq) Solution A has the lowest pH. In solution B, dissolved H2PO4– cannot act as a Brønsted acid. Solution C has the lowest pH. In all solutions, the concentration of hydroxide ion is lower than 0.100 M at equilibrium. Solution A contains a negligible amount of H3PO4 at equilibrium. Solution C contains a negligible amount of H3PO4 at equilibrium.
Consider the molecule, pentanoic acid which has a pKa of 4.81: H3C OH Calculate the conjugate base to acid ratio at each of the following pH values. i. 11.75 ii. 4.81 iii. 2.95
(a) Determine pH of a solution containing 0.0153 M HClO4 containing 0.105 M NaClO4 . A. pH 7.00 B. pH 0.84 C. pH 1.82 D. pH 1.60 E. pH 2.79 (b) What is the value of [H3O+] in a solution where pOH is 5.38? A. 2.40 x 10-9 B. 3.40 x 10-9 C. 2.60 x 10-10 D. 4.17 x 10-6 E. 3.20 x 10-10
Which is the correct pH and pOH of each of the solutions at 25 °C for which the substances ionize completely? (Choose all that apply) Question 29 options: a) 0.0031 M Ca(OH)2: pH = 11.79 and pOH= 2.21 b) 0.0163 M NaOH: pH = 12.16 and pOH= 1.845 c) 0.400 M HCl: pH = 0.699 and pOH= 13.30 d) 3.0 M HClO4: pH =-0.48 and pOH= 14.48
There are far more weak acids and bases than there are strong acids and bases. But how is strength determined? What is pKa?
2. If we mix 0.50 mol NaOAc and 0.50 mol HCIO into 1-L solution, the resulting solution should have the pH 7. Note that Kb(OAc') = 5.6 x 10-10; Ka(HCIO) = 3.0 x 108. %3D a) greater than b) equal to c) less than d) None of the above

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