Consider the following four electrodes,
P = Cu2+ (0.0001 M) | Cu(s)
Q = Cu2+ (0.1 M) | Cu(s)
R = Cu2+ (0.01 M) | Cu(s)
S = Cu2+ (0.001 M) | Cu(s)
If the standard reduction potential of Cu2+/Cu is +0.34 V, the reduction potentials in volts of the above electrodes follow the order
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Conductivity of 0.01 M NaCl solution is 0.00147 ohm–1cm–1. What happens to this conductivity if extra 100 ml of H2O will be added to the above solution? |
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Cr2O2– EѲ |
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How many moles of Pt may be deposited on the cathode when 0.80 F of electricity is passed through a 1.0 M solution of Pt4+? |
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One ampere of current is passed for 9650 seconds through molten AlCl3. What is the weight in grams of Al deposited at cathode? (Atomic weight of Al = 27) |
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Molar ionic conductivities of a bivalent electrolyte are 57 and 73. The molar conductivity of the solution will be |
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One Faraday of electricity is passed through molten Al2O3,aqueous solution of CuSO4 and molten NaCl taken in three different electrolytic cells connected in series. The mole ratio of Al, Cu and Na deposited at the respective cathode is |
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Several blocks of magnesium are fixed to the bottom of a ship to |
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When a lead storage battery is discharged |
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At 25°C molar conductance of 0.1 molar aqueous solution of ammonium hydroxide is 9.54 ohm–1cm2 mol–1 and at infinite dilution its molar conductance is 238 ohm–1cm2 mol–1. The degree of ionisation of ammonium hydroxide at the same concentration and temperature is |
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Standard electrode potentials are: Fe2+ | Fe (E° = –0.44 V), Fe3+ | Fe2+ (E° =0.77 V) Fe2+, Fe3+ and Fe blocks are kept together, then |
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