The ratio of the molar concentrations of benzoate ions and benzoic acid needed to buffer a solution at p H of 3.50 has to be calculated. Concept Introduction: Henderson – Hasselbalch equation: The p H of a buffer can be easily calculated by using Henderson – Hasselbalch equation as given below. p H = p K a + log [ b a s e ] i n i t i a l [ a c i d ] i n i t i a l

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Chapter 6, Problem 6G.4BST

Interpretation Introduction

Interpretation:

The ratio of the molar concentrations of benzoate ions and benzoic acid needed to buffer a solution at pH of 3.50 has to be calculated.

Concept Introduction:

Henderson – Hasselbalch equation:

The pH of a buffer can be easily calculated by using Henderson – Hasselbalch equation as given below.

pH=pKa+log[base]initial[acid]initial

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