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Lecture 1: Electrochemical cells ; Galvanic cells ; Measurement of electrode potential ; Nernst Equation

  • Chapter-3 Electrochemistry Assignments 1

    Write the cell reaction of a lead storage battery when it is discharged. How
    does the density of the electrolyte change when the battery is discharged?

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  • Chapter-3 Electrochemistry Assignments 2

    What advantage do the fuel cells have over primary and secondary batteries?

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  • Chapter-3 Electrochemistry Assignments 3

    Write the Nernst equation for the cell reaction in the Daniel cell. How will the
    ECell be affected when concentration of Zn2+ ions is increased?

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  • Chapter-3 Electrochemistry Assignments 4

    A galvanic cell has electrical potential of 1.1V. If an opposing potential of 1.1V
    is applied to this cell, what will happen to the cell reaction and current flowing
    through the cell?

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  • Chapter-3 Electrochemistry Assignments 5

    Write Nernst equation –

    For the general cell reaction

    aA+bB→cC+dD

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  • Chapter-3 Electrochemistry Assignments 6

    Write the Nernst equation and emf of the following cells at 298 K:

    (i) Mg(s) | Mg2+(0.001M) || Cu2+(0.0001 M) | Cu(s)

    (ii) Fe(s) | Fe2+(0.001M) || H+(1M)|H2(g)(1bar) | Pt(s)

    (iii) Sn(s) | Sn2+(0.050 M) || H+(0.020 M) | H2(g) (1 bar) | Pt(s)

    (iv) Pt(s) | Br2(l) | Br-(0.010 M) || H+(0.030 M) | H2(g) (1 bar) | Pt(s).

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  • Chapter-3 Electrochemistry Assignments 7

    Depict the galvanic cell in which the reaction Zn(s) + 2Ag+(aq) → Zn2+(aq) + 2Ag(s) takes place. Further show:

    (i) Which of the electrode is negatively charged?

    (ii) The carriers of the current in the cell.

    (iii) Individual reaction at each electrode.

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  • Chapter-3 Electrochemistry Assignments 8

    Explain how rusting of iron is envisaged as setting up of an electrochemical cell.

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    • Description:-

    Lecture 1:
    Today, we will discuss the first four topics of this chapter, i.e Electrochemical cells ; Galvanic cells ; Measurement of electrode potential ; Nernst Equation from Chapter-3 Electrochemistry
    OBJECTIVES:
    1:  In this topic we are going to understand different types of cells  through these topics i.e; Electrochemical cells ; Galvanic cells ; Measurement of electrode potential ; Nernst Equation
    Important Tip:
     This lecture about Chapter-3 Electrochemistry is base for the further chapters. These topics help in many ways as to understand the and how we can use them. It help you in further studies also.Please go through the topic, their notes. Properly do the assignments, watch videos of the concerned topics. If you any doubt about any topic/point please submit it in the discussion section... it will be answered as soon as possible.
    After all of this... when you fell confident about the particular topic/chapter then take the quiz.

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