Electrochemistry questions
1808 published questions with worked solutions.
- When 0.1 mol MnO _4^ 2- is oxidised the quantity of electricity required to completely oxidise MnO _4^ 2- to MnO _4^ - is
- A device that converts energy of combustion of fuels like hydrogen and methane, directly into electrical energy is known as :-
- The pressure of H _2 required to make the potential of H _2 - electrode zero in pure water at 298 K is:
- In the electrochemical cell : Zn | ZnSO _4(0.01 M )|| CuSO _4(1.0 M )| Cu , the emf of this Daniel cell is E_1. When the...
- For the cell reaction 2 Fe ^ 3+ (aq) + 2 I ^ - (aq) 2 Fe ^ 2+ (aq) + I _2(aq) E^ _ cell = 0.24 V at 298 K. The standard Gibbs...
- For a cell involving one electron E^ _ cell = 0.59 V at 298 K, the equilibrium constant for the cell reaction is : [Given that...
- The resistance of a conductivity cell of 0.1 M KCl solution is 120 ohm and conductivity is 1.64 10^ -4 S cm ^ -1 . What is the...
- Calculate the quantity of electricity required to liberate 0.1 mol of chlorine gas during electrolysis of molten sodium chloride
- Which from following expression is used to calculate Ecell for the following cell at 25^ ? Pb_ (s) ,| ,Pb^ 2+ _ (1M) ,|| ,Ag^ + _...
- Which from following is NOT true about electrolysis of molten NaCl?
- The resistance of decimolar solution of NaCl is 30 ohms. Calculate the conductivity of solution if the cell constant is 0.33 cm^...
- The limiting molar conductivities ( _0) for NaCl, KBr and KCl are 126, 152 and 150 S cm^2mol^ -1 respectively. What is the _0 of...
- A conductivity cell dipped in 0.05 M KCl has resistance of 600 ohm. If conductivity is 0.0015 ohm^ -1 cm^ -1 . What is the value...
- What is the cell constant, if two platinum electrodes in conductivity cell are separated by 0.92 cm and area of cross section is...
- The molar conductivity of 0.02 M KCl solution is 410 ^ -1 , cm ^2 , mol ^ -1 at 25^ C . Calculate its conductivity ?
- Calculate the amount of electricity required to convert 1.1 mol of Cr _2 O _7^ 2- to Cr ^ +3 in acid medium
- Which of the following statements is NOT correct for H _2- O _2 fuel cell?
- If E^ cell for Cd_ (s) |Cd^ 2+ _ (1M) ||Ag^ + _ (1M) |Ag_ (s) is 1.2 V. What is the emf of the cell at 25^ C ?
- What is conductivity of 0.02 M AgNO_3 solution having cell constant 1.1 cm^ -1 and resistance is 94.5 ohms?
- Which of the following expression for conductivity of solution of an electrolyte is NOT correct?
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