The temperature coefficient of e.m.f of a cell can be given by :

The e.m.f. of a cell is a

The cell potential (E_(cell)) of a reaction is related as /_\G=-nF E_(cell) , where /_\ G represents max. useful electrical work n=no. of moles of electrons exchanged during the section for reversible cell reaction d(/_\G)=(/_\_rV)dp-(/_\_rS),dT at constant pressure d(/_\G)=-(/_\_rS).dT :' At constant pressure /_\G=/_\H-T./_\S :. /_\G=/+\H+T(d(/_\G))/((dT)_P) ((dE_(cell))/(dT))_P is known as temperture coefficient of the e.m.f of the cell. The temperature coefficient of the e.m.f of cell, ((dE)/(dT))_P si given by:

The e.m.f. of two cells can be compared by

The e.m.f. of a cell depends on

The standard electromitive force of the cell Fe|Fe^(2+)(aq)||Cd^(2+)|Cd is 0.0372 V The temperature coefficient of e.m.f. is -0.125VK^(-1) . Calculate the quantities triangleG,triangleH^(@) and triangleS^(@) at 25^(@)C

E.m.f. of a cell is measured in

The temperature dependence of the emf of a standard electrochemical cell is given by E=1.02-4.0xx10^(-5) (T-20)-9.0xx10^(-7) (T-20)^(2) where, T is in .^(@)C and E is in volts. The temperature coefficient of the emf at 30^(@)C is :