5) ApH resulting from adding 10.0 mL 1.00 M HCI a) What would the ApH be of 50.0 mL of pure water if 10.0 mL 1.00 M HC1 is added?

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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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5) ApH resulting from adding 10.0 mL 1.00 M HCI
a) What would the ApH be of 50.0 mL of pure water if 10.0 mL 1.00 M HCl is added?
Answer:
Buffer Problem Set – Page 6 of 7
b) What would the ApH be of 50.0 mL of Buffer B if 10.0 mL 1.00 M HCl is added?
Transcribed Image Text:5) ApH resulting from adding 10.0 mL 1.00 M HCI a) What would the ApH be of 50.0 mL of pure water if 10.0 mL 1.00 M HCl is added? Answer: Buffer Problem Set – Page 6 of 7 b) What would the ApH be of 50.0 mL of Buffer B if 10.0 mL 1.00 M HCl is added?
The 3-step ionization of phosphoric acid:
Kal = 7.11 × 10-3
H;PO4 = H* + H2PO4
H-PO4 = H + HPO4²
HPO4² = H + PO4
2-
6.32 x 10-8
Ka2 =
Ka3 = 7.11 × 10-13
2-
3-
Available Aqueous Solutions:
1.00 M HC1
1.00 M H3PO4
1.00 M KH2PO4
1.00 M K2HPO4
1.00 M NaOH
Available Solids:
KH2PO4
K2HPO4
K3PO4
Transcribed Image Text:The 3-step ionization of phosphoric acid: Kal = 7.11 × 10-3 H;PO4 = H* + H2PO4 H-PO4 = H + HPO4² HPO4² = H + PO4 2- 6.32 x 10-8 Ka2 = Ka3 = 7.11 × 10-13 2- 3- Available Aqueous Solutions: 1.00 M HC1 1.00 M H3PO4 1.00 M KH2PO4 1.00 M K2HPO4 1.00 M NaOH Available Solids: KH2PO4 K2HPO4 K3PO4
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10 ml of 1.00 M HCl is added to 50ml of water.

 

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