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Ways of Representing the Concentration of a Solution

Select the co...

Question

Select the correct statements if $9.65 A$ current is passed for 1 hour through the cell : $A g | A g^{\oplus} | (1 M) | | C u^{2 +} (1 M) | C u$ .

Ag will oxidize to

A g^{\oplus}

and

[A g^{\oplus}] = 1.36 M

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A g^{\oplus}

will reduce to Ag and new

[A g^{\oplus}] = 0.64 M

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C u^{2 +}

will reduce to Cu and new

[C u^{2 +}] = 0.82 M

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Cu will oxidize to

C u^{2 +}

and new

[C u^{2 +}] = 0.82 M

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Solution

The correct options are
A Ag will oxidize to $A g^{\oplus}$ and $[A g^{\oplus}] = 1.36 M$ .
C $C u^{2 +}$ will reduce to Cu and new $[C u^{2 +}] = 0.82 M$ .
$\frac{W}{E_{W}} = \frac{I t}{96500} = \frac{9.65 \times 3600}{96500}$

$= 0.36$ eq. of $A g^{\oplus} = 0.36$ eq of $C u^{2 +} = 0.36$ moles of $A g^{\oplus} = 0.18$ mole of $C u^{2 +}$

Now , $A g$ will oxidize to $A g^{\oplus}$ , $C u^{2 +}$ will reduce to $C u$ .

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Similar questions

A g | A g^{+} | | C u^{2 +} | C u

C u^{2 +}

A g^{+}

C u | C u^{2 +} (1 M) | | A g^{+} (1 M) | A g, E^{o} = 0.46 V

Z n | Z n^{2 +} (1 M) | | C u^{2 +} (1 M) | C u, E^{o} = 1.10 V

Z n | Z n^{2 +} | | A g^{+} (1 M) | A g

C u | C u^{2 +} (1 M) | | A g^{+} (1 M) | A g, E^{0} = 0.46 V

Z n | Z n^{2 +} (1 M) | | C u^{2 +} (1 M) | C u, E^{0} = 1.10 V

Z n | Z n^{2 +} (1 M) | | A g^{+} (1 M) | A g

The standard reducation potentials of

$Z n^{2 +} | Z n, C u^{2 +} | C u$ and $A g^{+} | A g$

are respectively -0.76, 0.34 and 0.8 V. The following cells were constructed.

a) $Z n | Z n^{2 +} | | C u^{2 +} | C u$

b) $Z n | Z n^{2 +} | | A g^{+} | A g$

c) $C u | C u^{2 +} | | A g^{+} | A g$

What is the correct order $E {^{0}}_{c e l l}$ of these cells?

A g^{+}

C u^{2 +}

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