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How many moles of electrons are required for reduction of 2 moles of Zn2+ to Zn?
Concept: Electrochemical Cells
Draw a neat and well labelled diagram of Standard Hydrogen Electrode. Also write its one application.
Concept: Reference Electrodes
Calculate the voltage of the cell Sn(s) / Sn2+(0.02 M) // Ag+ (0.01 M) / Ag(s) at 25 °C.
Given: `"E"_"Sn"^circ` = - 0.136, `"E"_"Ag"^circ` = 0.800 V
Concept: Electrode Potential and Cell Potential
Write working of NICAD storage cell. Also write its applications.
Concept: Galvanic Cells Useful in Day-to-day Life
Calculate `"E"_"cell"^circ` of the following galvanic cell:
Mg(s) / Mg2+(1 M) // Ag+ (1 M) / Ag(s) if `"E"_"Mg"^circ` = – 2.37 V and `"E"_"Ag"^circ` = 0.8 V. Write cell reactions involved in the above cell. Also mention if cell reaction is spontaneous or not.
Concept: Electrode Potential and Cell Potential
The standard potential of the cell in the following reaction is ______.
\[\ce{Cd_{(s)} + Cu^{2+}_{(1M)} -> Cd^{2+}_{(1M)} + Cu_{(s)}}\]
`("E"_("Cd")^circ = - 0.403V, "E"_("Cu")^circ = 0.334V)`
Concept: Electrode Potential and Cell Potential
The value of [H3O+] in mol lit–1 of 0.001 M acetic acid solution (Ka = 1.8 × 10–5) is ______.
Concept: Electrical Conductance of Solution
How many moles of electrons are required for reduction of 2 moles of Zn2+ to Zn? How many Faradays of electricity will be required?
Concept: Electrolytic Cell
Draw a neat, labelled diagram of a standard hydrogen electrode (SHE).
Concept: Reference Electrodes
Which cells is used as a source of power in flashlights?
Concept: Galvanic Cells Useful in Day-to-day Life
Write electrode reactions and overall cell reaction when Leclanche's dry cell generates electricity.
Concept: Galvanic Cells Useful in Day-to-day Life
Calculate molar conductivity for 0.5 M BaCl2 if its conductivity at 298K is 0.01 Ω–1 cm–1.
Concept: Electrical Conductance of Solution
Calculate standard Gibbs energy change at 25°C for the cell reaction.
\[\ce{Cd_{(s)} + Sn^{2+}_{ (aq)} -> Cd^{2+}_{ (aq)} + Sn_{(s)}}\]
\[\ce{E^0_{cd}}\] = –0.403 V, \[\ce{E^0_{Sn}}\] = –0.136 V
Concept: Thermodynamics of Galvanic Cells
Draw labelled diagram of H2 – O2 fuel cell.
Concept: Fuel Cells
What is the SI unit of molar conductivity?
Concept: Electrical Conductance of Solution
Write any two difficulties of setting SHE (Standard Hydrogen Electrode).
Concept: Reference Electrodes
Write the net cell reaction during discharging of lead accumulator.
Concept: Galvanic Cells Useful in Day-to-day Life
Write the names and chemical formulae of any one ore of zinc.
Concept: Occurrence of Metals
Write the names and chemical formulae of any one ore of iron.
Concept: Occurrence of Metals
What are Ellingham's diagrams? Write 2 features of it.
Concept: Thermodynamic Principles of Metallurgy
