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B.Sc Chemistry Electrochemistry — practice questions — page 2

Explore 55 free Electrochemistry questions in B.Sc Chemistry 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 31–55 of 55.

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 →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

Galvanic cell or electrolytic cell?

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Items
  1. Item
    Runs a spontaneous redox reaction
    Category
    Galvanic cell
  2. Item
    Produces electrical work
    Category
    Galvanic cell
  3. Item
    A battery in use
    Category
    Galvanic cell
  4. Item
    Drives a non-spontaneous reaction
    Category
    Electrolytic cell
  5. Item
    Consumes electrical energy
    Category
    Electrolytic cell
  6. Item
    Electroplating a spoon
    Category
    Electrolytic cell
Categories
  1. Item
    Galvanic cell
  2. Item
    Electrolytic cell
A galvanic cell turns the chemical energy of a SPONTANEOUS redox reaction into electrical work. An electrolytic cell spends electrical energy to drive a NON-spontaneous one. Everything else follows from that. Source: syllabus Chemistry Part I, Ch 2 Electrochemistry.

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Complete the standard cell potential relation

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Missing parts
  1. Answer
    hydrogen
    Choices
    1. hydrogen
    2. oxygen
    3. silver
  2. Answer
    zero
    Choices
    1. zero
    2. one volt
    3. −2.93 V
  3. Answer
    minus
    Choices
    1. minus
    2. plus
    3. times
Complete the statement
Every standard electrode potential is measured against the standard {0} electrode, whose potential is taken as {1}. The standard cell potential is then E°(cathode) {2} E°(anode).
The reference point is what makes the whole scale work. Source: syllabus Chemistry Part I, Ch 2 Electrochemistry.

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Order these electrodes by standard potential, lowest first

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Steps
  1. K⁺/K at −2.93 V
  2. Mg²⁺/Mg at −2.37 V
  3. Cr³⁺/Cr at −0.74 V
  4. Hg²⁺/Hg at 0.79 V
  5. Ag⁺/Ag at 0.80 V
Values as printed in your syllabus: K⁺/K = −2.93 V, Mg²⁺/Mg = −2.37 V, Cr³⁺/Cr = −0.74 V, Hg²⁺/Hg = 0.79 V, Ag⁺/Ag = 0.80 V. Source: syllabus Chemistry Part I, Ch 2 Electrochemistry.

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