Electrochemistry questions
1808 published questions with worked solutions.
- In the cell, Pt, Sn^ +2 | Sn^ +4 || Fe^ +3 | Fe^ +2 , Pt, the cathode half cell reaction is
- Given that E^ (Zn) = -0.76 V and E^ (Mg | Mg^ 2+ ) = 2.37 V. What will happen when zinc dust is added to MgCl_2 solution?
- E^ for Fe^ 2+ + 2e^- → Fe is -0.4 volts and E^ for Zn^ 2+ + 2e^- → Zn is -0.76 volts. It means that
- Which of the following metals will be deposited first when a solution containing 0.1 mol/litre of each of AgNO_3, Ca(NO_3) and...
- Standard zinc electrode is coupled with a standard electrode to form a cell, whose emf was found to be 1.60 V, reduction taking...
- In emf series, elements are arranged in the
- Which of the following metals when coupled will give maximum e.m.f. for a voltaic cell?
- When an aqueous solution of sulphuric acid is electrolyzed the ion discharges at the anode is
- During discharging of lead storage cell, the reaction taking place at cathode is represented by :
- In a dry cell cathode is
- If an external opposing E. M. F. is slightly greater than E.M.F. of Daniel cell the reaction will
- In lead accumulator the electrolyte used is
- In Daniel cell zinc displaces copper from CuSO_4 solution since it has
- Which of the following is a secondary cell?
- In the storage battery during charging
- The cell that was used as the primary source of electrical energy on the Appolo moon flights is
- The electrolyte used in mercury cell is
- In a dry cell, zinc container is protected from the atmosphere by covering it with
- The anode in a dry cell is
- The dry cell do not have a long life because
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