Electrochemistry questions
1808 published questions with worked solutions.
- For a cell, Cu(s)|Cu^ 2+ (0.001M)||Ag^ + (0.01M)|Ag(s) the cell potential is found to be 0.43 V at 298 K. The magnitude of...
- Resistance of a conductivity cell (cell constant 129 m^ -1 ) filled with 74.5 ppm solution of KCl is 100 (labelled as solution...
- The cell potential for the given cell at 298 K Pt|H_ 2 (g, 1 bar)|H^ + (aq)||Cu^ 2+ (aq)|Cu(s) is 0.31 V. The pH of the acidic...
- A dilute solution of sulphuric acid is electrolysed using a current of 0.10 A for 2 hours to produce hydrogen and oxygen gas. The...
- An electrochemical cell is fueled by the combustion of butane at 1 bar and 298 K. Its cell potential is X F 10^3 volts, where F...
- The standard electrode potential of M^+/M in aqueous solution does not depend on
- The number of incorrect statements from the following is _______ A. The electrical work that a reaction can perform at constant...
- The reaction 1 2 H_2(g)+AgCl(s) H^+(aq)+Cl^-(aq)+Ag(s) occurs in which of the given galvanic cell ?
- The specific conductance of 0.0025 M acetic acid is 5 10^ -5 S cm^ -1 at a certain temperature. The dissociation constant of...
- FeO_4^ 2- +2.2V Fe^ 3+ +0.70V Fe^ 2+ -0.45V Fe^0 E^0_ FeO_4^ 2- /Fe^ 2+ is x 10^ -3 V. The value of x is _________.
- The number of correct statements from the following is ........ A. E_ cell is an intensive parameter B. A negative E° means that...
- In an electrochemical reaction of lead, at standard temperature, if E^0_ (Pb^ 2+ /Pb) = m Volt and E^0_ (Pb^ 4+ /Pb) = n Volt,...
- For lead storage battery pick the correct statements A. During charging of battery, PbSO_4 on anode is converted into PbO_2 B....
- At 298 K, the standard reduction potential for Cu^ 2+ /Cu electrode is 0.34 V. Given : K_ sp Cu(OH)_2 = 1 10^ -20 Take 2.303RT F...
- A metal surface of 100 cm^2 area has to be coated with nickel layer of thickness 0.001 mm. A current of 2A was passed through a...
- The number of correct statements from the following is ___________ (A) Conductivity always decreases with decrease in...
- At 298 K, a 1 litre solution containing 10 mmol of Cr_2O_7^ 2- and 100 mmol of Cr^ 3+ shows a pH of 3.0. Given : Cr_2O_7^ 2- Cr^...
- Which one among the following metals is the weakest reducing agent?
- Pt(s)|H_2(g)(1bar)|H^+(aq)(1M)||M^ 3+ (aq),M^+(aq)|Pt(s) The E_ cell for the given cell is 0.1115 V at 298 K when [M^+(aq)] [M^...
- Consider the cell Pt(s) | H_2(g) (1 atm) | H^+ (aq, [H^+] = 1)|| Fe^ 3+ (aq), Fe^ 2+ (aq) | Pt(s) Given E^0_ Fe^ 3+ /Fe^ 2+ =...
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