The standard oxidation potential of zinc and silver in water at 298 K are Z ns - Z n2-2 e- - E-0-76 VA gs - A g2-2 e- - E-0-80 VWhich of the following reactions actually take placeA- Z n-a q-2 A gs - 2 A g-a q-Z nsB- Z ns-A gs - Z n-a q-A g-a qC- Z ns-2 A g-a q - Z n-a q-2 A gsD- Z n-a q-A g-a q - Z ns-A gs

The correct option is C In this reaction zinc acts as a anode and Ag nbsp;acts as a cathode. ...

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Extraction of Copper

The standard ...

Question

The standard oxidation potential of zinc and silver in water at 298 K are

Which of the following reactions actually take place

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△ G^{\circ}

Z n (s) + A g_{2} O (s) + H_{2} O (l) ⇌ Z n^{2 +} (a q) + 2 A g (s) + 2 O H^{-} (a q)

E_{A g^{+} / A g}^{\circ} = + 0.80 V

E_{Z n^{2 +} / Z N}^{\circ} = - 0.76 V

Z n (s) + A g_{2} O (s) + H_{2} O (l) ⇌ 2 A g (s) + Z n^{2 +} (a q) + 2 O H^{-} (a q)

Z n^{2 +} (a q) + 2 e^{-} \to Z n (s); E^{\circ} = - 0.76 V

A g_{2} O (s) + H_{2} O (l) + 2 e^{-} \to 2 A g (s) + 2 O H^{-} (a q), E^{\circ} = 0.34 V

25^{o} C

Z n

A g

Z n (s) \to Z n^{+ 2} (a q) + 2 e^{-}, E^{0} = 0.76 V

A g (s) \to A g^{+} (a q) + e^{-}, E^{0} = - 0.80 V

Δ_{r} G^{o}

Z n_{(s)} + A g_{2} O_{(s)} + H_{2} O_{(l)} \to Z n_{(a q)}^{2 +} + 2 A g_{(s)} + 2 O H_{(a q)}^{-}

[E_{A g_{2} O / A g}^{o} = 0.344 V, E_{Z n^{2 +} / Z n}^{o} = - 0.76 V]

Z n (s) + A g_{2} O (s) + H_{2} O (l) ⇌ 2 A g (s) + Z n^{2 +} (a q) + 2 O H^{-} (a q)

Z n^{2 +} (a q) + 2 e \to Z n (s); E^{0} = - 0.76 V

A g_{2} O (s) + H_{2} O (l) 2 e \to 2 A g (s) + 2 O H^{-} (a q), E^{0} = 0.34 V

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