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Potentially Useful Reference Information Kw = 0.114 x 10-14 at 0°C Kw = 0.465 x 1014 at 15°C Kw = 0.681 x 10-14 at 20°C %3D Kw = 1.00 x 10-14 at 25°C %3D Kw = 2.42 x 10-14 at 37°C Kw = 9.61 x 10-14 at 60°C Acid Ka HCI 1.3 x 106 H2SO4 1х 103 HNO3 2.4 x 101 HSO4 1.2 x 10-2 A student measures the temperature of an NaOH solution to be 15 degrees C. The student then measures the pH of this NaOH solution to be pH = 12.39. H3PO4 7.5 x 103 H3CCOOH 1.8 x 10-5 In a separate experiment at 25°C, a student recorded that it took 25.8 mL of a 0.200M NAOH solution to completely neutralize 32.00 mL of H2CO3 4.3 x 107 an unknown, diprotic acid solution. Determine the initial molarity of H2PO4 6.2 x 10-8 this unknown acid solution. Error analysis is not necessary, but report your answer with the correct HCO3 4.8 x 10-11 number of significant figures. HPO,2 4.8 x 10-13

Potentially Useful Reference Information Kw = 0.114 x 10-14 at 0°C Kw = 0.465 x 1014 at 15°C Kw = 0.681 x 10-14 at 20°C %3D Kw = 1.00 x 10-14 at 25°C %3D Kw = 2.42 x 10-14 at 37°C Kw = 9.61 x 10-14 at 60°C Acid Ka HCI 1.3 x 106 H2SO4 1х 103 HNO3 2.4 x 101 HSO4 1.2 x 10-2 A student measures the temperature of an NaOH solution to be 15 degrees C. The student then measures the pH of this NaOH solution to be pH = 12.39. H3PO4 7.5 x 103 H3CCOOH 1.8 x 10-5 In a separate experiment at 25°C, a student recorded that it took 25.8 mL of a 0.200M NAOH solution to completely neutralize 32.00 mL of H2CO3 4.3 x 107 an unknown, diprotic acid solution. Determine the initial molarity of H2PO4 6.2 x 10-8 this unknown acid solution. Error analysis is not necessary, but report your answer with the correct HCO3 4.8 x 10-11 number of significant figures. HPO,2 4.8 x 10-13

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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Potentially Useful Reference Information Kw = 0.114 x 10-14 at 0°C Kw = 0.465 x 1014 at 15°C Kw = 0.681 x 10-14 at 20°C %3D Kw = 1.00 x 10-14 at 25°C %3D Kw = 2.42 x 10-14 at 37°C Kw = 9.61 x 10-14 at 60°C Acid Ka HCI 1.3 x 106 H2SO4 1х 103 HNO3 2.4 x 101 HSO4 1.2 x 10-2 A student measures the temperature of an NaOH solution to be 15 degrees C. The student then measures the pH of this NaOH solution to be pH = 12.39. H3PO4 7.5 x 103 H3CCOOH 1.8 x 10-5 In a separate experiment at 25°C, a student recorded that it took 25.8 mL of a 0.200M NAOH solution to completely neutralize 32.00 mL of H2CO3 4.3 x 107 an unknown, diprotic acid solution. Determine the initial molarity of H2PO4 6.2 x 10-8 this unknown acid solution. Error analysis is not necessary, but report your answer with the correct HCO3 4.8 x 10-11 number of significant figures. HPO,2 4.8 x 10-13
Transcribed Image Text:Potentially Useful Reference Information Kw = 0.114 x 10-14 at 0°C Kw = 0.465 x 1014 at 15°C Kw = 0.681 x 10-14 at 20°C %3D Kw = 1.00 x 10-14 at 25°C %3D Kw = 2.42 x 10-14 at 37°C Kw = 9.61 x 10-14 at 60°C Acid Ka HCI 1.3 x 106 H2SO4 1х 103 HNO3 2.4 x 101 HSO4 1.2 x 10-2 A student measures the temperature of an NaOH solution to be 15 degrees C. The student then measures the pH of this NaOH solution to be pH = 12.39. H3PO4 7.5 x 103 H3CCOOH 1.8 x 10-5 In a separate experiment at 25°C, a student recorded that it took 25.8 mL of a 0.200M NAOH solution to completely neutralize 32.00 mL of H2CO3 4.3 x 107 an unknown, diprotic acid solution. Determine the initial molarity of H2PO4 6.2 x 10-8 this unknown acid solution. Error analysis is not necessary, but report your answer with the correct HCO3 4.8 x 10-11 number of significant figures. HPO,2 4.8 x 10-13
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