Histidine has ionizable groups with pKa values of 1.8, 6.0, and 9.2, as shown below. A...

Histidine has ionizable groups with pKa values of 1.8, 6.0, and 9.2, as shown below. A biochemist makes up 100 mL of a 0.100 M solution of histidine at a pH of 5.40. She then adds 40 mL of 0.10 M HCl. What is the pH of the resulting solution?

The book answer is 2.4. Please show work to help me understand how they arrived at this.

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queen_honey_blossom answered 1 year ago

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