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Redox Reactions — Chemistry STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceChemistryRedox Reactions2 Marks
Question
Is it safe to stir IM AgNO3 solution with copper spoon?
$\text{E}^\circ_\frac{\text{Ag}^+}{\text{Ag}}=+0.80\text{V}$
$\text{E}^\circ_\frac{\text{Cu}^{2+}}{\text{Cu}}=+0.34\text{V}$
✓

Answer

No, because Cu is more reactive than Ag, it will disptace Ag from AgNO3 solution. Secndly
$\text{E}^\circ_\text{Cell}=\text{E}^\circ_\frac{\text{Ag}^+}{\text{Ag}}-\text{E}^\circ_\frac{\text{Cu}^{2+}}{\text{Cu}}$
$=0.80\text{V}-0.34\text{V}$
$=0.46\text{V}$
Since $\text{E}^\circ_\text{Cell}$ is +ve, $\Delta\text{G}^\circ$ will be negative, reaction will take place.

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