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AP Intermediate 2nd Year Electrochemistry — practice questions

Explore 91 free Electrochemistry questions in AP Intermediate 2nd Year Chemistry. Open each question or exercise to read its content, reference answers and available explanation.

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Electrochemistry questions and exercises with answers

Showing questions 1–30 of 91.

Which half-reaction from the notes represents reduction?Read the answer and worked solution →The potential developed between a metal rod and its solution due to oxidation is called:Read the answer and worked solution →The situation in which the charge buildup near the Zn rod prevents further oxidation is called:Read the answer and worked solution →Which half-reaction from the given notes represents oxidation?Read the answer and worked solution →The van't Hoff factor $i$ for a $0.01$ M aqueous solution of NaCl, assuming complete dissociation, is approximately:Read the answer and worked solution →The Nernst equation for a half-cell reaction at 298 K is:Read the answer and worked solution →In a Daniell cell, $\mathrm{Zn} | \mathrm{Zn}^{2+}(aq) \,||\, \mathrm{Cu}^{2+}(aq) | \mathrm{Cu}$, the standard EMF is calculated as:Read the answer and worked solution →The standard reduction potential of the standard hydrogen electrode (SHE) is assigned the value:Read the answer and worked solution →For a cell reaction with $E^\circ_\text{cell} = +0.59\,\text{V}$ and $n = 2$, the equilibrium constant $K$ at $298\,\text{K}$ is approximately:Read the answer and worked solution →Which of the following is classified as a secondary (rechargeable) cell?Read the answer and worked solution →A solution is best defined as:Read the answer and worked solution →In a salt-in-water solution, the solvent is:Read the answer and worked solution →The empirical rule 'like dissolves like' predicts that:Read the answer and worked solution →Which of the following is **not** a colligative property?Read the answer and worked solution →When a non-volatile solute is dissolved in a volatile solvent, the vapour pressure of the solution:Read the answer and worked solution →In a GALVANIC cell, the ANODE is:Read the answer and worked solution →The standard electrode potential of the Standard Hydrogen Electrode (SHE) is defined as:Read the answer and worked solution →The Daniell cell (Zn-Cu) has E°cell = +1.10 V. Calculate ΔG° (F = 96500 C/mol):Read the answer and worked solution →The Nernst equation at 25°C for a cell reaction is:Read the answer and worked solution →Faraday's first law of electrolysis states that the mass deposited is:Read the answer and worked solution →The byproduct of a hydrogen-oxygen fuel cell (used in space + electric cars) is:Read the answer and worked solution →NEET · Chemistry · Galvanic vs Electrolytic CellRead the answer and worked solution →Galvanic cell or electrolytic cell?Read the answer and worked solution →Complete the standard cell potential relationRead the answer and worked solution →Order these electrodes by standard potential, lowest firstRead the answer and worked solution →Match each electrode to the potential your syllabus givesRead the answer and worked solution →True or false: conductivity on dilutionRead the answer and worked solution →Strong electrolyte or weak electrolyte?Read the answer and worked solution →Kohlrausch's lawRead the answer and worked solution →Match each relation to what it linksRead the answer and worked solution →

Worked practice questions

Which half-reaction from the notes represents reduction?

  1. $Zn \rightarrow Zn^{2+} + 2e^{-}$
  2. $Cu^{2+} + 2e^{-} \rightarrow Cu$
  3. $Cu \rightarrow Cu^{2+} + 2e^{-}$
  4. $Zn^{2+} \rightarrow Zn + 2e^{-}$
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Correct answer: B. $Cu^{2+} + 2e^{-} \rightarrow Cu$

Reduction involves gain of electrons, so electrons must appear on the reactant side. In $Cu^{2+} + 2e^{-} \rightarrow Cu$, copper ions gain electrons to form copper metal.

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The potential developed between a metal rod and its solution due to oxidation is called:

  1. Reduction potential
  2. Oxidation potential
  3. Solubility potential
  4. Neutralization potential
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Correct answer: B. Oxidation potential

The notes define the potential developed between the rod and the solution in this case as oxidation potential, represented by $E(Zn/Zn^{2+})$.

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The situation in which the charge buildup near the Zn rod prevents further oxidation is called:

  1. Equivalence point
  2. Triple point
  3. Saturation point
  4. End point
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Correct answer: C. Saturation point

The notes explicitly state that when the positive charge layer around the rod prevents further oxidation, that condition is known as the saturation point.

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