An aqueous buffer solution at 25 degree C consists of 0.080 M chlorous acid (HClO_2) together...
Question:
An aqueous buffer solution at {eq}25^{\circ}C {/eq} consists of 0.080 M chlorous acid {eq}(HClO_2) {/eq} together with 0.040 M sodium chlorite ({eq}NaClO_2 {/eq}, the salt of the conjugate base of chlorous acid). The Ka of chlorous acid is {eq}1.0 \times 10^{-2} {/eq}. Calculate the pH of the solution.
Buffer System:
A buffer system is an aqueous solution designed to resist changes in its pH within a narrow range when small amounts of strong acid/base are added to it. This property is made possible through a weak acid-base conjugate pair, in which both the weak acid and weak base are present in comparable concentrations (i.e. numbers of moles). This represents a frozen equilibrium, where either component will experience minimal dissociation. Each conjugate pair will control the pH within a different narrow range and this property will be maintained as long as neither component of the buffer is fully exhausted (consumed).
Answer and Explanation: 1
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This is a buffer system composed of chlorous acid (weak acid) and chlorite ion (conjugate weak base from sodium chlorite). The equilibrium of this...
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How To Calculate the PH of a Buffer Solution | Equation & Example
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Chapter 11 / Lesson 8
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Learn how to calculate the pH of a buffer solution. Discover the purpose of a buffer solution, and work through examples using the buffer solution equation.
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