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pH of Glycine After Addition of Acid/Base

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I need some help answering this questsion:
If I had 1L of a 1.0M solution of glycine at the isoelectric pH (6.02) and I added 0.3 mol of HCL, what would be the new pH? What would be the pH if I added 0.3 mol of NaOH instead of the acid?

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https://brainmass.com/biology/biological-chemistry/48260

Solution Summary

This in-depth solution conducts step-by-step calculation to determine the new pH of the solution and also pH when 0.3 mol of NaOH is added. All formulas and workings are shown for better understanding.

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