A hydrogen electrode placed in a buffer solution of \[C{{H}_{3}}COONa\] and acetic acid in the ratio x : y and y : x has electrode potential value \[{{E}_{1}}\] volts and \[{{E}_{2}}\] volts, respectively at \[\text{25}{}^\circ \text{C}\]. The \[p{{K}_{a}}\] value of acetic acid is (\[{{E}_{1}}\] and \[{{E}_{2}}\] are oxidation potential):

\[\frac{{{E}_{2}}-{{E}_{1}}}{0.118}\]

\[\frac{{{E}_{1}}+{{E}_{2}}}{0.118}\]

\[-\frac{{{E}_{1}}+{{E}_{2}}}{0.118}\]

\[\frac{{{E}_{1}}-{{E}_{2}}}{0.118}\]

A hydrogen electrode placed in a buffer solution of \[C{{H}_{3}}COONa\

1.	A hydrogen electrode placed in a buffer solution of \[C{{H}_{3}}COONa\] and acetic acid in the ratio x : y and y : x has electrode potential value \[{{E}_{1}}\] volts and \[{{E}_{2}}\] volts, respectively at \[\text{25}{}^\circ \text{C}\]. The \[p{{K}_{a}}\] value of acetic acid is (\[{{E}_{1}}\] and \[{{E}_{2}}\] are oxidation potential):
A.	\[\frac{{{E}_{1}}+{{E}_{2}}}{0.118}\]
B.	\[\frac{{{E}_{2}}-{{E}_{1}}}{0.118}\]
C.	\[-\frac{{{E}_{1}}+{{E}_{2}}}{0.118}\]
D.	\[\frac{{{E}_{1}}-{{E}_{2}}}{0.118}\]
Answer» B. \[\frac{{{E}_{2}}-{{E}_{1}}}{0.118}\]

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