Classify each of the following mixtures of aqueous solutions as buffers according to their resulting pH. 10 mL of 0.50 M HF + 10 mL of 0.25 M NaOH 15 mL of 0.10 M CH3COOH + 5.0 mL of H₂O 0.5 L of 0.25 M HCI + 0.8 L of 0.25 M LICN 25 mL of 0.60 M HCIO4 + 45 mL of 0.60 M KF 250 mL of 0.30 M HCI + 100 mL of 0.75 M KNO2 300 mL of 0.50 M HCIO + 400 mL of 0.50 M NaCIO Reset Help Buffer with pH > pKa Buffer with pH = pKa Buffer with pH < pKa Not a Buffer

Classify each of the following mixtures of aqueous solutions as buffers according to their resulting pH. 10 mL of 0.50 M HF + 10 mL of 0.25 M NaOH 15 mL of 0.10 M CH3COOH + 5.0 mL of H₂O 0.5 L of 0.25 M HCI + 0.8 L of 0.25 M LICN 25 mL of 0.60 M HCIO4 + 45 mL of 0.60 M KF 250 mL of 0.30 M HCI + 100 mL of 0.75 M KNO2 300 mL of 0.50 M HCIO + 400 mL of 0.50 M NaCIO Reset Help Buffer with pH > pKa Buffer with pH = pKa Buffer with pH < pKa Not a Buffer

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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How will you differentiate the concept of Acids, Alkalis and Salts under topic of properties and uses of Acids. Also write down a) The brainstorming activity for the topic. b) The follow-up strategy for the topic. c) The precautions for conducting activities with Acids.
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Time (sec.) pH of distilled water pH of buffered solution 20 7.99 8.61 40 7.46 8.43 60 7.15 8.31 80 6.75 8.22 100 6.54 8.16 120 6.39 8.10 140 6.22 8.05 160 6.11 8.01 180 6.03 7.97 Conclusion Explain your observations from the data table. Which resists a change in pH the most, water or the buffered solution? Give reasons. When you blow into the water, the pH goes up. Is the solution becoming more basic or acidic? A buffer is usually made of a weak acid and a weak base. When you blow into a buffer the pH doesn’t change. What do you think is happening?
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