AP Intermediate 2nd Year Electrochemistry — practice questions
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In the Daniell cell shown, which metal acts asFor a galvanic cell, the standard cell EMF is given by:Given standard reduction potentials $E^{\circ}(\mathrm{Cu^{2+}/Cu}) = +0.34$ V and $E^{\circ}(\mathrm{Zn^{2+}/The Nernst equation for a half-cell reaction at 298 K is:How many coulombs of charge are required to deposit $108$ g of silver from a $\mathrm{AgNO_3}$ solution? (AtomWhen a current of $5$ A is passed through a $\mathrm{CuSO_4}$ solution for $193$ seconds, the mass of Cu deposIn a galvanic cell, the oxidation half-reaction takes place at the:In the standard Daniell cell (Zn|Zn²⁺ || Cu²⁺|Cu) at unit concentrations, the cell EMF is:
If an external opposinThe standard hydrogen electrode (SHE) is assigned a standard electrode potential of:In the standard electrode potential series, F₂/F⁻ has E° = +2.87 V and Li⁺/Li has E° = −3.05 V. Which of the fThe Nernst equation for the cell reaction aA + bB → cC + dD at 298 K is:For the cell Cu(s) + 2Ag⁺ → Cu²⁺ + 2Ag, E°_cell = +0.46 V at 298 K. The equilibrium constant K_c is approximatΔG is an extensive property while E_cell is an intensive property. This means:The SI unit of conductance (G = 1/R) is:The molar conductivity Λ_m of an electrolyte solution is defined as:
For *stKohlrausch's law of independent migration of ions states that the limiting molar conductivity of an electrolytGiven Λ°_m for HCl, NaAc, NaCl = 425.9, 91.0, 126.4 S cm² mol⁻¹ respectively. Calculate Λ°_m for acetic acid (The molar conductivity of 0.001028 M acetic acid is 48.15 S cm² mol⁻¹, and Λ°_m(HAc) = 390.5 S cm² mol⁻¹. The Faraday's first law of electrolysis states that the mass of substance deposited at an electrode is proportionaThe Faraday constant F = 96500 C mol⁻¹ represents:A CuSO₄ solution is electrolysed with 1.5 A for 10 minutes. The mass of copper (M = 63.5) deposited at the catDuring electrolysis of **aqueous** NaCl (brine), the products are:In the H₂–O₂ fuel cell used in the Apollo space programme, the electrolyte is:Why does corrosion of iron require both water and oxygen?A device converting CHEMICAL energy to electrical energy via spontaneous redox is a:In the Daniell cell, the cathode reaction is:EMF of standard Daniell cell at 25°C is approximately:Faraday's first law of electrolysis states mass deposited is proportional to: