Electrochemistry questions
1808 published questions with worked solutions.
- The weight of silver (eq. wt. =108) displaced by the quantity of current which displaces 5600 mL of hydrogen at STP is
- Rust is a mixture of
- The main function of the salt bridge is
- For a cell prepared from electrodes A and B: Electrode A: Cr_2O_7^ 2- |Cr^ 3+ , E^ _ red =+1.33 V, and Electrode B: Fe^ 3+ |Fe^...
- Is the reaction 2 Al +3 Fe^ 2+ 2 Al^ 3+ +3 Fe possible?
- On the basis of the following E^ values, the strongest oxidizing agent is: Fe^ 3+ +e^- Fe^ 2+ , E^ =+0.77 V; [Fe(CN)_6]^ 3- +e^-...
- Each of three metals X, Y and Z was put in turn into aqueous solutions of the other two: it was found that X+ Salt of Y (or Z) Y...
- In an electrolytic cell, the anode and cathode are respectively represented as
- Calculate the volume of hydrogen at NTP obtained by passing a current of 0.4 ampere through acidified water for 30 minutes.
- The standard reduction potentials at 25^ of Li^+/Li , Ba^ 2+ /Ba , Na^+/Na and Mg^ 2+ /Mg are -3.05, -2.73, -2.71 and -2.37 V...
- Standard reduction potentials of the half-reactions are: F_2 (g)+2e^- 2 F^- (aq), E^ =+2.85 V; Cl_2 (g)+2e^- 2 Cl^- (aq), E^...
- The cell reaction for the cell Pt ,P_1( H_2 ) ,| , H^+ (1 M) ,|| , H^+ (1 M) ,| ,P_2( H_2 ), Pt is spontaneous if
- During the electrolysis of fused CaH_2 , H_2 is liberated at the
- The number of faradays required to generate 1 g-atom of Mg from MgCl_2 is
- The metal that cannot be obtained by electrolysis of an aqueous solution of its salt is
- In a salt bridge, KCl is used because
- Iron sheets are galvanized to
- The time required to coat a metal surface of 80 cm^2 with a 5 10^ -3 cm thick layer of silver (density 1.05 g ,cm^ -3 ) by...
- An electric current of c amperes was passed through a solution of an electrolyte for t seconds, depositing P g of metal M on the...
- The standard oxidation potentials of the electrodes Ag|Ag^+ , Sn|Sn^ 2+ , Ca|Ca^ 2+ , Pb|Pb^ 2+ are -0.8, 0.136, 2.866 and 0.126...
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Alcohols, Phenols and EthersAldehydes, Ketones and Carboxylic AcidsAlternating CurrentAminesAnatomy of Flowering PlantsAncient Indian HistoryAnimal KingdomApplication of DerivativesArea Under CurveAromatic Compounds and Aryl HalidesAtomsBasic Mathematics and LogarithmBinomial TheoremBiodiversity and ConservationBiological ClassificationBiomoleculesBiotechnology and Its ApplicationsBiotechnology: Principles and ProcessesBody Fluids and CirculationBreathing and Exchange of GasesCell Cycle and Cell DivisionCell: The Unit of LifeChemical Bonding and Molecular StructureChemical Coordination and Integration