A cell consists of two hydrogen electrodes. The negative electrode is in contact with a solution having pH=6. the positive electrode is in contact with a solution of pH=x. calculate the value of x if the e.m.f of the cell is found to be 0.118V at 298K

A cell contains two hydrogen electrodes. The negative electrode is in contact with a solution of 10^-6M hydrogen ions. The e.m.f. of the cell is 0.118V at 25^@C . Calculate the concentration of hydrogen when at the positive electrode.

Calculate the potential of hydrogen electrode income with a solution whose pH is 10.

Calculate the electrode potential of a silver electrode dipped in a 0.1 M solution of silver nitrate at 298K assuming AgNO_3 to be completely dissociated. The standard electrode potential of Ag^+|Ag is 0.80V at 298K.

Calculate the electrode potential at copper electrode dipped in a 0.1 M solution of copper sulphate at 298K, assuming CuSO_4 to be completely ionised. The standard electrode potential of Cu^(2+)|Cu is 0.34V at 298K.

The resistance of a conductivity cell with 0.1 M KCl solution is found to be 200 ohm at 298K. When the same cell was filled with 0.02 M NaCl solution, the resistance at the same temperature is found to be 1100 ohm . Calculate: the cell constant of the cell in m^-1 . Given conductivity of 0.lM KCl is 1.29 Sm^(-1) ]

The resistance of 0.25 M solution of an electrolyte was found to be 75 Omega . Calculate molar conductivity of the solution, if the electrodes in the cell are 1.8 cm apart and have an area of cross section 3.6 cm^2 .

Zinc rod is dipped in 0.1 M solution of ZnSO4. The salt is 95% dissociated at this dilution at 298 K. Calculate the electrode potential. [Given EZn2+/Zn = +(-0.76 V]

A conductivity cell has its electrodes 1 cm apart and each electrode has area of cross-section 2 cm^(2) , when filled with M/50 solution of sodium acetate, the cell shows a resistance of 166.5 ohms. Calculate the molar conductance of sodium acetate solution at the givne concentration.