A cell diagram shown below contains one litre of buffer solution of...

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A cell diagram shown below contains one litre of buffer solution of \( \mathrm{HA}\left(\mathrm{p} K_{a}=4\right) \) and \( \mathrm{Na} A \) in both compartment. What is the cell e.m.f.?
(a) \( 0.03 \mathrm{~V} \)
(b) \( 0.06 \mathrm{~V} \)
(c) \( -0.06 \mathrm{~V} \)
\( \mathrm{P}^{\mathrm{x}^{82}} \mathrm{x} \)
W
(d) None of these
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