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CBSE Class 12-science Answered

calculate the standard free energy change and max work obtained for thre reaction occuring at daniel cell
Zn|Zn2+(1M)||cu2+(1m)|cu
F=96500C \MOL ALSO CALCULATE THE EQUILIBRIUM CONSTANT FOR THE REACTION
Asked by vasturushi | 05 Dec, 2017, 09:10: PM
answered-by-expert Expert Answer
Cell space reaction space is colon
space
space space Zn subscript open parentheses aq close parentheses end subscript space space plus space space space space Cu subscript open parentheses straight S close parentheses end subscript to the power of 2 plus end exponent space space space rightwards arrow space space Zn to the power of 2 plus end exponent space space space space plus space space Cu subscript open parentheses straight s close parentheses end subscript space space space

straight E to the power of straight o subscript cell space space space space equals space space space straight E to the power of straight o subscript bevelled Zn over Zn to the power of 2 plus end exponent end subscript space space space plus space space space straight E to the power of straight o subscript bevelled Cu to the power of 2 plus end exponent over Cu end subscript

space space space space space space space space space space space space space space space equals space 0.76 space plus space 0.34

space space space space space space space space space space space space space space space space space equals space 1.10 space straight V


space space space increment straight G to the power of 0 space equals space minus nEF

space space space space space space space space space space space space space equals space left parenthesis negative 2 right parenthesis cross times 96500 cross times 1.10
space space space space space space space space space space space space space space space
space space space increment straight G to the power of 0 space space space space equals left parenthesis negative 212300 right parenthesis space straight J

space space space space space straight W subscript max space space equals space space space space minus increment straight G to the power of 0
space space space space space space space space space space space space space space space space space
space space space space space space space space space space space space space space equals space 212300 space straight J

space space space Equillibrium space consta n t space

space space space space space space space increment straight G to the power of 0 space space equals space minus space 2.303 RTlogK subscript straight c space space space

space space space minus 212300 space space equals space space space minus space 2.303 cross times 8.314 cross times 273 cross times space logK subscript straight c space
space space space space
space space space space space space space space space space space space space space LogK subscript straight c space equals space 40.61
space space space space space space space
space space space space space space space space space space space space space space space space space space space space space space straight K subscript straight c space space space equals space space antilog left parenthesis 40.61 right parenthesis

space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space equals space 4.11 cross times 10 to the power of 40
Answered by Varsha | 06 Dec, 2017, 12:21: PM
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