An unknown compound, X, is thought to have a carboxyl group with a pKa of 2.0 and another ionizable group with a pKa between 5 and 8. When 75 mL of 0.1 M NaOH is added to 100 mL of a 0.1M solution of X at pH 2.0, the pH increases to 6.72. Calculate the pKa of the second ionizable group of X. PLEASE SHOW FULL PROCEDURE AND BE CLEAR AND EXPLICIT IN EACH OF THE CALCULATIONS

An unknown compound, X, is thought to have a carboxyl group with a pKa of 2.0 and another ionizable group with a pKa between 5 and 8. When 75 mL of 0.1 M NaOH is added to 100 mL of a 0.1M solution of X at pH 2.0, the pH increases to 6.72. Calculate the pKa of the second ionizable group of X. PLEASE SHOW FULL PROCEDURE AND BE CLEAR AND EXPLICIT IN EACH OF THE CALCULATIONS

Organic Chemistry

9th Edition

ISBN:9781305080485

Author:John E. McMurry

Publisher:John E. McMurry

Chapter20: Carboxylic Acids And Nitriles

Section20.3: Biological Acids And The Henderson–hasselbalch Equation

Problem 5P: Calculate the percentages of dissociated and undissociated forms present in the following solutions:...

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Assuming that base (B:) and acid (AH) are mixed in equal concentrațions and using pka values of acid AH 3.7 and pka value of conjugate acid for the base BH 4.9 calculate what percent of BH will appear in this reaction once the equilibrium is reached. Answer is numerical. Round the answer to the nearest whole number. Don't write % symbol in the answer.
An unknown compound, X, is thought to have a carboxyl group with a pKa of 2.0 and another ionizable group with a pKa between 5 and 8. When 75 mL of0.1 M NaOH is added to 100 mL of a 0.1 M solution of X at pH 2.0, the pH increases to 6.72. Calculate the pKa of the second ionizable group of X
thank you, I would like to have a follow-up question. Would you get an answer of 4.05 pH if the value of your formic acid is 0.050 M while your sodium formate is 0.10 M? and still the same pKa which is 3.75?
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