The emf of the following three galvanic cells.
$I .$ $Z n / Z n^{2 +} (1 M) | | C u^{2 +} (1 M) / C u$
$I I .$ $Z n / Z n^{2 +} (0.1 M) | | C u^{2 +} (1 M) / C u$
$I I I .$ $Z n / Z n^{2 +} (1 M) | | C u^{2 +} (0.1 M) / C u$
are represented by $E_{1}, E_{2}$ and $E_{3}$ . Which of the following is true

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TestHub · Accepted Answer

E c e l l = E c e l l o - 2.303 R T n F l o g [ Z n 2 + ] [ C u 2 + ] E 1 = E c e l l o - 2.303 R T 2 F l o g 1 1 = E c e l l o E 2 = E c e l l o - 2.303 R T 2 F l o g 0.1 1 = E c e l l o + 2.303 R T 2 F E 2 = E c e l l o - 2.303 R T 2 F l o g 1 0.1 = E c e l l o - 2.303 R T 2 F Hence, E 2 > E 1 > E 3 .

Chemistry - Electrochemistry Question with Solution | TestHub

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