Metallurgical Engineering > GATE 2022 > Electrochemistry
The emf of the cell
Au-Pb(liquid)|PbCl2-KCl(liquid)|Cl2(gas,0.5 atm),C(graphite)
is 1.2327 V at 873 K. Activity of Pb in the Au-Pb alloy is 0.72 and the activity of PbCl2 in the electrolyte is 0.18. The standard Gibbs energy of formation of PbCl2(liquid) at 873 K is _______ kJ mol-1 (round off to 1 decimal place). Given: R=8.314 J⋅K-1⋅mol-1 and F=96500 C⋅mol-1
Au-Pb(liquid)|PbCl2-KCl(liquid)|Cl2(gas,0.5 atm),C(graphite)
is 1.2327 V at 873 K. Activity of Pb in the Au-Pb alloy is 0.72 and the activity of PbCl2 in the electrolyte is 0.18. The standard Gibbs energy of formation of PbCl2(liquid) at 873 K is _______ kJ mol-1 (round off to 1 decimal place). Given: R=8.314 J⋅K-1⋅mol-1 and F=96500 C⋅mol-1
Correct : -232.5
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