2022-01-30T17:33:57+03:00[Europe/Moscow] en true <p>what is the electrode (reduction) potential (E)</p>, <p>how is the electrode potential demonstrated </p>, <p>why can electrode potential be demonstrated by reversible half equations</p>, <p>when writing the half equations the electrons for electrode potential. the electron must always be written on which side</p>, <p>why do different species of elements have different electrode potentials</p>, <p>the more likely it is for a species to undergo reduction, the</p>, <p>what is the position of equilibrium in electrolysis of the more positive (less negative) species</p>, <p>the more negative (or less positive) the electrode potential, the</p>, <p>what is the position of equilibrium in electrolysis of the more negative (less positive) species</p>, <p>what factors does the position of equilibrium and therefore the electrode potential depend on</p>, <p>in order to compare the electrode potentials of different species, what must be done</p>, <p>when comparing electrode potentials what conditions must be used</p>, <p>what are the standard conditions for comparison of electrode potentials</p>, <p>what are electrode potentials measured relative to</p>, <p>what is the value of a standard hydrogen electrode</p>, <p>electrode potentials compared to the standard hydrogen electrode are referred to as</p>, <p>definition of a standard electrode potential <strong>(<em>E</em><sup>ꝋ</sup>)</strong></p>, <p>once the standard electrode potential is known, what can be calculated</p>, <p>does one of the half cells of an electrochemical cell have to be a SHE?</p>, <p>what is the voltage of an electrochemical cell also known as</p>, <p>what is the symbol for the standard cell potential</p>, <p>how is the standard cell potential calculated</p>, <p>what happens when a metal rod is placed in an aqueous solution of its ions</p>, <p>what is redox equilibrium</p>, <p>true/false</p><p>the position of redox equilibrium is different for different metals</p>, <p>what do metal atoms and ions in solution cause</p>, <p>can electric potential of a cell be measured directly</p>, <p>what is electrode potential measured in</p>, <p>what is the SHE used as</p>, <p>what does a SHE consist of</p>, <p>equation for hydrogen in a SHE</p>, <p>when a SHE is connected to a half cell what instrument is used to give the standard electrode potential</p> flashcards

A2 Level Standard Electrode & Cell Potentials

CIE Syllabus

Customize
collection saved
Share
Long Term Learning Spaced Repetition
Add to Long Term Learning Desk
Fast learning Repeat this set of flashcards
Preview Test Spell
Play
Match
Review

  • what is the electrode (reduction) potential (E)

    a value which shows how easily a substance is reduced

  • how is the electrode potential demonstrated

    using reversible half equations

  • why can electrode potential be demonstrated by reversible half equations

    because there is a redox equilibrium between two related species that are in different oxidation states

  • when writing the half equations the electrons for electrode potential. the electron must always be written on which side

    the left hand side (demonstrating reduction)

  • why do different species of elements have different electrode potentials

    because the position of equilibrium is different for different species

  • the more likely it is for a species to undergo reduction, the

    more positive (less negative) an electrode potential

  • what is the position of equilibrium in electrolysis of the more positive (less negative) species

    lies more to the right

  • the more negative (or less positive) the electrode potential, the

    less likely it is that the reduction of that species will occur

  • what is the position of equilibrium in electrolysis of the more negative (less positive) species

    lies more to the left

  • what factors does the position of equilibrium and therefore the electrode potential depend on

    temperature

    pressure of gases

    concentration of reagents

  • in order to compare the electrode potentials of different species, what must be done

    must be measured against a common reference or standard

  • when comparing electrode potentials what conditions must be used

    standard conditions

  • what are the standard conditions for comparison of electrode potentials

    ion concentration of 1.00mol dm-3

    temperature of 298K

    pressure of 1atm

  • what are electrode potentials measured relative to

    a standard hydrogen electrode

  • what is the value of a standard hydrogen electrode

    0.00V

  • electrode potentials compared to the standard hydrogen electrode are referred to as

    (Eꝋ)

    a standard electrode potential

  • definition of a standard electrode potential (Eꝋ)

    the voltage produced when a standard half-cell is connected to a standard hydrogen cell under standard conditions

  • once the standard electrode potential is known, what can be calculated

    the voltage of the electrochemical cell made up of any two half cells

  • does one of the half cells of an electrochemical cell have to be a SHE?

    no

  • what is the voltage of an electrochemical cell also known as

    standard cell potential

  • what is the symbol for the standard cell potential

    Ecellꝋ

  • how is the standard cell potential calculated

    the difference between the standard electrode potentials of the two half cells

    (more positive minus the less positive)

  • what happens when a metal rod is placed in an aqueous solution of its ions

    a redox equilibrium is established between the metal ions and atoms

  • what is redox equilibrium

    reduction and oxidation of a species is happening at equal rates

  • true/false

    the position of redox equilibrium is different for different metals

    true

  • what do metal atoms and ions in solution cause

    electric potential/ voltage

  • can electric potential of a cell be measured directly

    no

  • what is electrode potential measured in

    volts

  • what is the SHE used as

    a half cell for reference

  • what does a SHE consist of

    hydrogen gas in equilibrium with H+ ions of concentration 1.00moldm-3 at 1atm

    inert platinum electrode in contact with the hydrogen gas

  • equation for hydrogen in a SHE

    2H+ (aq) + 2e- ⇌ H2 (g)

  • when a SHE is connected to a half cell what instrument is used to give the standard electrode potential

    a voltmeter