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All questions A buffer is prepared by mixing 204 mL of 0.452 M HCl and 0.50 L of 0.400 M sodium acetate. (See Appendix) a) What is the pH? b) How many grams of KOH must be added to 0.500 L of the buffer to change the pH by 0.15units?

All questions A buffer is prepared by mixing 204 mL of 0.452 M HCl and 0.50 L of 0.400 M sodium acetate. (See Appendix) a) What is the pH? b) How many grams of KOH must be added to 0.500 L of the buffer to change the pH by 0.15units?

Chemistry
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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A buffer is prepared by mixing 204 mL of 0.452 M HCl and 0.50 L of 0.400 M sodium acetate.

(See Appendix)

a) What is the pH?

b) How many grams of KOH must be added to 0.500 L of the buffer to change the pH by 0.15units?

TE X file://C:/Users/ x file:///C:/Users/ x 2.pdf EK0024%20TUTORIAL%203.pdf -| D Page view A Read aloud Draw Iable of Acida with Ka and oka values Acid HA A Ka pKa Hydronisum ion lodic H,O HIO HC 04 H-SO HSO HCIO H,PO HASO CH-CICOOH HCH-O HF 0.0 HO 10 HC O HSO SO 1.6x 10 5.9 x 10 1.54 x 10 12x 10 1.1 x 10 7.52x 10 5,0 x 10 1.4x 10 8.4 x 10 7.2x 10 4.0 x 10 1.77x 10 1.38 x 10 7.9 x 10 6.46 x 10 6.4x 10 1.9x 10 1.5 x 10 1.76 x 10 0.80 Oxalic (1) Sulfurous (1) Sulforic (2) Chlorous 1.23 1.81 1.92 1.96 Phosphoric (1) Arsenic (1) Chloroacetic HPO HASO CH-CICOO H;CH,O F 2.12 2,30 2.85 Citric (1) Hydroflnorie Nitrous 3,08 3.14 3.39 HNO HCOOH NO Farmie HCO0 3,75 Lactic Ascoctic (1) Benzoie Oxalic (2) Hydrazoic Citric (2) Acetic Propionic Pyridinimn ion Citric (3) Carbonic (1) Sulfurous (2) Arsenic (2) Hydrosulfiaric Phosphoric (2) Hypochlorous Hypobromous Hydrocyanic Boric (1) Ammonium jon Phenol Carbonic (2) Hypoiodous Arsenic (3) HCH,H O H;C,H,O CH,COOH HC O HN HC,H,Of CH;COOH CH CH-COOH CHANH HCHO HCO, HSO HASO H;S CHH,O HCHO CH,COO CO N HCHO, CH;CO0 CH,CH-COO CHAN CHO HCO 3.86 4.10 4.19 4.19 4,72 4,74 4.75 1.34 x 10 5.6х 10 4,0 x 10 4.3 x 10 1.02 x 10 8/9.3 x 10 1.0x 109.1 x 10 6.23 x 10 3.5/3.0x 10 2x10 6.17x 10 5.8x 10 5.6x 10 1.6x 10 4.8x 10 2x 10 6.0 x 103.0x 10 24x 10 1,6x 10 4,5/2.2 x 10 1.0x 10 4.87 5.25 5,40 6,37 6,91 7.10/7.03 HASO HS 7/7.04 HPO, HCIO HPO CIO 7.21 7.46/7.53 HBrO BrO 8.70 HCN CN 9.21 H BO NH, CH,O CO 9.23 HBO, NH CH,OH HCO HIO 9.25 9.80 10.32 IO 10.70 Aso, HO CHO HAIO, 9.22/11.53 Hydrogen peroxide Ascorbic (2) Phosphoric (3) Water 11.62 HC,H,O HPO H-O 11.80 PO 12.32/12.66 OH 14.0 38 19
Transcribed Image Text:TE X file://C:/Users/ x file:///C:/Users/ x 2.pdf EK0024%20TUTORIAL%203.pdf -| D Page view A Read aloud Draw Iable of Acida with Ka and oka values Acid HA A Ka pKa Hydronisum ion lodic H,O HIO HC 04 H-SO HSO HCIO H,PO HASO CH-CICOOH HCH-O HF 0.0 HO 10 HC O HSO SO 1.6x 10 5.9 x 10 1.54 x 10 12x 10 1.1 x 10 7.52x 10 5,0 x 10 1.4x 10 8.4 x 10 7.2x 10 4.0 x 10 1.77x 10 1.38 x 10 7.9 x 10 6.46 x 10 6.4x 10 1.9x 10 1.5 x 10 1.76 x 10 0.80 Oxalic (1) Sulfurous (1) Sulforic (2) Chlorous 1.23 1.81 1.92 1.96 Phosphoric (1) Arsenic (1) Chloroacetic HPO HASO CH-CICOO H;CH,O F 2.12 2,30 2.85 Citric (1) Hydroflnorie Nitrous 3,08 3.14 3.39 HNO HCOOH NO Farmie HCO0 3,75 Lactic Ascoctic (1) Benzoie Oxalic (2) Hydrazoic Citric (2) Acetic Propionic Pyridinimn ion Citric (3) Carbonic (1) Sulfurous (2) Arsenic (2) Hydrosulfiaric Phosphoric (2) Hypochlorous Hypobromous Hydrocyanic Boric (1) Ammonium jon Phenol Carbonic (2) Hypoiodous Arsenic (3) HCH,H O H;C,H,O CH,COOH HC O HN HC,H,Of CH;COOH CH CH-COOH CHANH HCHO HCO, HSO HASO H;S CHH,O HCHO CH,COO CO N HCHO, CH;CO0 CH,CH-COO CHAN CHO HCO 3.86 4.10 4.19 4.19 4,72 4,74 4.75 1.34 x 10 5.6х 10 4,0 x 10 4.3 x 10 1.02 x 10 8/9.3 x 10 1.0x 109.1 x 10 6.23 x 10 3.5/3.0x 10 2x10 6.17x 10 5.8x 10 5.6x 10 1.6x 10 4.8x 10 2x 10 6.0 x 103.0x 10 24x 10 1,6x 10 4,5/2.2 x 10 1.0x 10 4.87 5.25 5,40 6,37 6,91 7.10/7.03 HASO HS 7/7.04 HPO, HCIO HPO CIO 7.21 7.46/7.53 HBrO BrO 8.70 HCN CN 9.21 H BO NH, CH,O CO 9.23 HBO, NH CH,OH HCO HIO 9.25 9.80 10.32 IO 10.70 Aso, HO CHO HAIO, 9.22/11.53 Hydrogen peroxide Ascorbic (2) Phosphoric (3) Water 11.62 HC,H,O HPO H-O 11.80 PO 12.32/12.66 OH 14.0 38 19
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