A 100.0-ml, buffer solution is 0.170 mol L¹ in HClO and 0.165 mol L¹ in NaCIO. K₂ (HCIO) = 4.0 x 10-8 Part A What is the initial pH of this solution? Express your answer using two decimal places. Η ΑΣΦ pH = Submit Part B What is the pH after addition of 155.0 mg of HBr? Express your answer using two decimal places. 196] ΑΣΦ pH = Submit Part C Request Answer pH = What is the pH after addition of 55.0 mg of NaOH? Express your answer using two decimal places. [5] ΑΣΦ Submit Request Answer Request Answer ? ? ?

A 100.0-ml, buffer solution is 0.170 mol L¹ in HClO and 0.165 mol L¹ in NaCIO. K₂ (HCIO) = 4.0 x 10-8 Part A What is the initial pH of this solution? Express your answer using two decimal places. Η ΑΣΦ pH = Submit Part B What is the pH after addition of 155.0 mg of HBr? Express your answer using two decimal places. 196] ΑΣΦ pH = Submit Part C Request Answer pH = What is the pH after addition of 55.0 mg of NaOH? Express your answer using two decimal places. [5] ΑΣΦ Submit Request Answer Request Answer ? ? ?

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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When 30 .00 mL of 0.1011 M HCl in 50 mL of deionized water is titrated against 0.09889 M NaOH, the pH increases. What is the volume (in mL) of NaOH required to reach the equivalence point and a pH of 7.00? Find the pH when the volume of NaOH added is 0.02 mL less than the volume required to reach the equivalence point. Find the pH when the volume of NaOH added is 0.01 mL less than the volume required to reach the equivalence point. Find the pH when the volume of NaOH added is 0.02 mL more than the volume required to reach the equivalence point. Comment on the significance of the changes in pH values in relation to the increments of sodium hydroxide added when going “through” the end point. Define equivalence point. For a weak base/strong acid titration, is the pH at the equivalence point <, >, or equal to 7?
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