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Concept explainers

Acid Base Titration
An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.
Question

Table:

Name: Serine      pka: 2.187 (CO2H) / 9.209 (NH3)        Ka: 6.50*10^-3 (CO2H) / 6.18*10^-10 (NH3)

 

a) What is the pH, along with the concentration of each form of serine, in a 0.020 0 M solution of serine 
hydrochloride?


b) What is the pH, along with the concentration of each form of serine, in a 0.020 0 M solution of the 
sodium salt of serine? 


c) What is the pH, along with the concentration of each form of serine, in a 0.020 0 M solution of serine? 


d) Calculate the isoionic and isoelectric pH for 0.020 0 M serine. 

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Step 1: Isoelectric point
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Step 2: Determination of pH of serine hydrochloride.
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Step 3: Determination of pH of sodium salt of serine.
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Step 4: Determination of pH of serine.
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Step 5: Determine the isoionic and isoelectric pH.
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