Electrochemistry questions
1808 published questions with worked solutions.
- An electrochemical cell is set up as Pt ( H_2 ,1 atm ) ,| ,0.1 M HCl ,|| ,0.1 M acetic acid ,| ,( H_2 ,1 atm ) Pt . The emf of...
- For a cell reaction involving a two-electron change, the standard emf of the cell is found to be 0.295 V at 25^ . The equilibrium...
- Consider the disproportionation 2 ClO_3^- ClO_2^- + ClO_4^- . If the initial concentration of chlorate ion is 0.1 M, what would...
- Consider the reaction 2 Ag^+ + C_6H_ 12 O_6 + H_2O 2 Ag (s)+ C_6H_ 12 O_7 +2 H^+ , with the half-reactions Ag^+ +e^- Ag , E^ _...
- Cu^+ ion is not stable in aqueous solution because of a disproportionation reaction. The E^ value for the disproportionation of...
- Platinum electrodes were immersed in a solution of cupric sulphate and electric current was passed through the solution. After...
- **Statement 1:** Galvanized iron does not rust. **Statement 2:** Zinc has a more negative electrode potential than iron.
- **Statement 1:** On increasing dilution, the specific conductance keeps on increasing. **Statement 2:** On increasing dilution,...
- On passing 1 F of electricity through electrolytic cells containing Ag^+ , Ni^ 2+ and Cr^ 3+ ion solutions, the masses of Ag (at....
- A certain current liberated 0.504 g of hydrogen in 2 h. How many grams of copper can be liberated by the same current flowing for...
- **Statement 1:** Copper metal with HCl liberates hydrogen. **Statement 2:** Hydrogen is present above Cu in the reactivity series.
- **Statement 1:** For a galvanic cell, oxidation takes place at the anode and reduction at the cathode. **Statement 2:** Electrons...
- A solution of sodium sulphate in water is electrolysed using inert electrodes. The products at the cathode and anode are...
- How many atoms of calcium will be deposited from a solution of CaCl_2 by a current of 25 mA flowing for 60 s?
- Given the standard electrode potentials Fe^ 2+ +2e^- Fe , E^ =-0.440 V and Fe^ 3+ +3e^- Fe , E^ =-0.036 V, the standard electrode...
- For the electrochemical cell M ,| ,M^+ ,|| ,X^- ,| ,X, E^ (M^+|M)=0.44 V and E^ (X|X^-)=0.33 V. From this data, one can deduce...
- A solution containing one mole per litre of each of Cu(NO_3)_2 , AgNO_3 , Hg_2(NO_3)_2 and Mg(NO_3)_2 is being electrolysed using...
- A cell constructed by coupling a standard copper electrode and a standard magnesium electrode has an emf of 2.7 V. If the...
- A current of strength 2.5 A was passed through CuSO_4 solution for 6 min 26 s. The amount of copper deposited is (atomic weight...
- During the electrolysis of an electrolyte, the number of ions produced is directly proportional to the
Other chapters
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