Interpretation Estimate the pK 4 of the acid has to be calculated. Concept introduction: UV/vis spectroscopy: It is deal with information about various compounds that have conjugated double, the UV light and visible light have jest the right energy to cause an electronic transition in a molecule that is to promote an electron from one molecular orbital to another higher energy. p H : The pKa of a compound was determined using the UV/Vis spectroscopy if either the acidic from or the basic from of the compound absorbs UV or visible light. Henderson-Hesselbalch equation: The acid lose a proton in an aqueous solution depends on the both the pKa of the acid and the p H of the solution, the relationship between the two is given by equation. p K a = p H + log [ H A ] [ A − ]

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Chapter 14.22, Problem 42P

Interpretation Introduction

Interpretation

Estimate the pK₄ of the acid has to be calculated.

Concept introduction:

UV/vis spectroscopy: It is deal with information about various compounds that have conjugated double, the UV light and visible light have jest the right energy to cause an electronic transition in a molecule that is to promote an electron from one molecular orbital to another higher energy.

pH: The pKa of a compound was determined using the UV/Vis spectroscopy if either the acidic from or the basic from of the compound absorbs UV or visible light.

Henderson-Hesselbalch equation: The acid lose a proton in an aqueous solution depends on the both the pKa of the acid and the pH of the solution, the relationship between the two is given by equation.

pKa= pH+ log [HA][A−]

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