CBSE Class 11-science Answered

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Asked by Balbir | 01 Oct, 2019, 11:46: PM

Expert Answer

In standard weston cadmium cell, emf is given, Other required data can be calculated by-

increment straight G equals negative nFE space space space space space space space equals negative 2 cross times 96500 cross times 1.0180 space space space space space space space space equals negative 196474 space straight J space space space space space space space space equals negative 196.474 KJ almost equal to negative 196.5 kJ increment straight S equals nF open parentheses dE over dT close parentheses subscript straight P space space space space space space equals 2 cross times 96500 cross times 4 cross times 10 to the power of negative 5 end exponent space space space space space space space equals negative 7.72 straight J divided by deg space space space space space space space equals negative 7.72 cross times 10 to the power of negative 3 end exponent space straight J divided by deg increment straight G equals increment straight H minus straight T increment straight S space minus 196.5 space equals increment straight H minus 298 cross times left parenthesis negative 7.72 cross times 10 to the power of negative 3 end exponent right parenthesis increment straight H equals negative 196.8 space KJ

Answered by Ravi | 03 Oct, 2019, 12:44: PM

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