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VITEEE Electrochemistry — practice questions — page 3

Explore 78 free Electrochemistry questions in VITEEE 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 61–78 of 78.

Match each relation to what it linksRead the answer and worked solution →True or false: cells and electrodesRead the answer and worked solution →Tap every statement true of a galvanic cellRead the answer and worked solution →Assertion and reasonRead the answer and worked solution →Two are true, one is notRead the answer and worked solution →Three of these are wrong. Find the one that holds.Read the answer and worked solution →Complete the thermodynamic linksRead the answer and worked solution →What the Nernst equation is forRead the answer and worked solution →Which quantity is being described?Read the answer and worked solution →True or false: batteries, fuel cells and corrosionRead the answer and worked solution →Order the steps: find a standard cell potentialRead the answer and worked solution →Flip and pair: symbol with meaningRead the answer and worked solution →Spot the one that does not belongRead the answer and worked solution →Tap every factor conductivity depends onRead the answer and worked solution →Assertion and reason: potentialsRead the answer and worked solution →Reading the definitions backRead the answer and worked solution →Complete the dilution behaviourRead the answer and worked solution →True or false: the standard scaleRead the answer and worked solution →

Worked practice questions

Match each relation to what it links

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Matching pairs
  1. Left
    ΔrG° = −nFE°(cell)
    Right
    cell potential to Gibbs energy
  2. Left
    ΔrG° = −RT ln K
    Right
    Gibbs energy to the equilibrium constant
  3. Left
    Nernst equation
    Right
    potential to concentration
  4. Left
    E°(cell) = E°(cathode) − E°(anode)
    Right
    cell potential to its electrodes
Three relations tie the cell potential to thermodynamics and to concentration. Source: syllabus Chemistry Part I, Ch 2 Electrochemistry.

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True or false: cells and electrodes

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Questions
  1. Statement is true
    Yes
    Statement
    An electrochemical cell has two electrodes in electrolytic solution.
  2. Statement is true
    Yes
    Statement
    The electrolyte is an ionic conductor.
  3. Statement is true
    No
    Statement
    Oxidation and reduction happen in the middle of the solution.
  4. Statement is true
    Yes
    Statement
    Oxidation and reduction take place at the electrodes.
  5. Statement is true
    Yes
    Statement
    Ions carry the current through the solution.
The definitions the chapter opens with. Source: syllabus Chemistry Part I, Ch 2 Electrochemistry.

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Tap every statement true of a galvanic cell

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Questions
  1. Items
    1. Text
      Its redox reaction is spontaneous
      Matches the category
      Yes
    2. Text
      It produces electrical work
      Matches the category
      Yes
    3. Text
      A fuel cell is one
      Matches the category
      Yes
    4. Text
      It needs an external power supply
      Matches the category
      No
    5. Text
      It drives a non-spontaneous reaction
      Matches the category
      No
    Category
    True of a GALVANIC cell
  2. Items
    1. Text
      Defined as κ ÷ c
      Matches the category
      Yes
    2. Text
      Increases as concentration falls
      Matches the category
      Yes
    3. Text
      Decreases as concentration falls
      Matches the category
      No
    4. Text
      Is the same as conductivity
      Matches the category
      No
    Category
    True of MOLAR conductivity
Batteries and fuel cells are both galvanic. Source: syllabus Chemistry Part I, Ch 2 Electrochemistry.

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