- 1(current)
Q. No.The rusting of iron takes place as follows:
\(\begin{aligned} & 2 \mathrm{H}^{+}+2 \mathrm{e}^{-}+1 / 2 \mathrm{O}_2 \longrightarrow \mathrm{H}_2 \mathrm{O}(1) ; E^{\circ}=+1.23 \mathrm{~V} \\ & \mathrm{Fe}^{2+}+2 \mathrm{e}^{-} \longrightarrow \mathrm{Fe}(\mathrm{s}) ; E^{\circ}=-0.44 \mathrm{~V} \end{aligned}\)
Calculate \(\Delta G^o\) for the net process:
\(\begin{aligned} & 2 \mathrm{H}^{+}+2 \mathrm{e}^{-}+1 / 2 \mathrm{O}_2 \longrightarrow \mathrm{H}_2 \mathrm{O}(1) ; E^{\circ}=+1.23 \mathrm{~V} \\ & \mathrm{Fe}^{2+}+2 \mathrm{e}^{-} \longrightarrow \mathrm{Fe}(\mathrm{s}) ; E^{\circ}=-0.44 \mathrm{~V} \end{aligned}\)
Calculate \(\Delta G^o\) for the net process:
| 1. | –322 kJ mol–1 | 2. | –161 kJ mol–1 |
| 3. | –152 kJ mol–1 | 4. | –76 kJ mol–1 |
Subtopic: Nernst Equation | Corrosion |
63%
From NCERT
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From the following select the one which is not an example of corrosion:
| 1. | Rusting of an iron object |
| 2. | Production of hydrogen by electrolysis of water |
| 3. | Tarnishing of silver |
| 4. | Development of green coating on copper and bronze ornaments |
Subtopic: Corrosion |
83%
From NCERT
NEET - 2024
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