Redox Reactions And Electrochemistry Questions

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[Easy]Across a reaction where sulphur dioxide decolourises acidified potassium permanganate, which species behaves as the oxidising agent in the process?...
[Easy]What major advantage does a hydrogen-oxygen fuel cell offer over a conventional thermal power plant for generating electricity?...
[Medium]In a lead storage battery during discharge, what substance is formed at both the anode and the cathode as the products of the cell reactions?...
[Medium]Rusting of iron is electrochemical in nature; which region of an iron surface in contact with water and oxygen acts as the cathode?...
[Medium]If a cell reaction transfers three electrons and has standard EMF 0.50 V, what is the standard Gibbs free energy change (F = 96500 C/mol)?...
[Easy]When chlorine gas reacts with cold dilute sodium hydroxide, the element undergoes a reaction in which it is simultaneously oxidised and reduced; what ...
[Easy]During electrolysis of aqueous sodium chloride with inert electrodes, which gas is liberated at the cathode rather than sodium metal?...
[Medium]A conductivity cell filled with 0.1 M KCl has resistance 100 ohm and cell constant 1.29 cm^-1; what is the conductivity of the solution?...
[Medium]Using limiting molar conductivities of sodium chloride, hydrochloric acid, and sodium acetate, how can the value for acetic acid be obtained?...
[Medium]Why does the molar conductivity of a strong electrolyte increase only slightly on dilution while that of a weak electrolyte rises sharply?...
[Easy]For a Daniell cell built from zinc and copper electrodes with E° values -0.76 V and +0.34 V, what is the standard cell potential?...
[Easy]Given the standard reduction potentials, which metal among zinc, copper, silver, and magnesium is the strongest reducing agent under standard conditio...
[Medium]A current of 9.65 amperes is passed through molten aluminium chloride for 100 minutes; what mass of aluminium is deposited at the cathode (atomic mass...
[Medium]When the dichromate ion oxidises ferrous ions in acidic solution, how many moles of Fe^2+ are oxidised by one mole of Cr_2O_7^2-?...
[Easy]In the compound potassium permanganate, KMnO_4, what is the oxidation state of the manganese atom when potassium is +1 and oxygen is -2?...
[Easy]The oxidation number of Cr in K₂Cr₂O₇ is:...
[Medium]In a lead storage battery during discharge, the reaction at anode is:...
[Medium]In the reaction MnO₄⁻ + Fe²⁺ + H⁺ → Mn²⁺ + Fe³⁺ + H₂O (acidic medium), the ratio of MnO₄⁻ to Fe²⁺ is:...
[Easy]The relationship between Gibbs free energy change and cell potential is:...
[Easy]The unit of molar conductivity is:...
[Medium]How many grams of copper will be deposited at the cathode when 0.5 F of electricity is passed through CuSO₄ solution? (Atomic mass of Cu = 63.5)...
[Easy]During electrolysis of aqueous NaCl solution, the product at cathode is:...
[Hard]For the cell Zn|Zn²⁺(0.1M)||Cu²⁺(0.01M)|Cu at 298 K, if E°cell = 1.10 V, the cell potential is: (Take 2.303RT/F = 0.06)...
[Medium]According to the electrochemical series, which metal is the strongest reducing agent among the following and can reduce Fe³⁺ to Fe²⁺?...
[Easy]Passivation of iron in concentrated HNO₃ is due to formation of:...
[Easy]A concentration cell is formed when:...
[Easy]The standard cell potential for the cell Zn|Zn²⁺||Cu²⁺|Cu is +1.10 V. If E°(Zn²⁺/Zn) = -0.76 V, then E°(Cu²⁺/Cu) is:...
[Easy]In a hydrogen-oxygen fuel cell, the overall reaction is:...
[Easy]According to Kohlrausch's law, the molar conductivity at infinite dilution for a salt can be calculated from:...
[Easy]Rusting of iron is an example of:...