Chemistry

Little confusing!! I need help PLZ!!!

Two half cells in a galvanic cell consist of one iron (Fe(s)) electrode in a solution of iron (II) sulphate (FeSO4(aq)) and a silver (Ag(s)) electrode in a silver nitrate solution.

a. Assume the cell is operating as a galvanic cell, state the overall and half-cell reactions.

Describe what will happen to the mass of the cathode while the cell is operating.

b. Repeat part a), assuming that the cell is operating as an electrolytic cell

  1. 👍 0
  2. 👎 0
  3. 👁 776
  1. The iron half cell is
    Fe(s) ==> Fe^2+(aq) + 2e
    The Ag half cell is
    Ag^+(aq) + e ==> Ag(s)

    Overall is
    Fe(s) + 2Ag^+(aq) ==> Ag(s) + Fe^2+(aq)
    I have written (aq) just to show Ag or Fe is in solution; the usual procedure is to place the concn in M there.

    The anode is Fe; the cathode is Ag. Ag plates out on the cathode; (Fe goes into solution at the anode)

    Part 2 is the reverse of all of this in an electrolytic cell.

    1. 👍 0
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. chemistry- electrochemical cell

    What makes this an oxidation-reaction? 3Ag2S+2Al(s) -> Al2S3+6 Ag(s)? Write the half-reactions showing the oxidation and reduction reactions. Identify which is the oxidation reaction and which is the reduction reason. What is

  2. chem 2

    Consider a chromium-silver voltaic cell that is constructed such that one half-cell consists of the chromium, Cr, electrode immersed in a Cr(NO3)3 solution, and the other half-cell consists of the silver, Ag, electrode immersed in

  3. chemistry 2

    A voltaic cell is constructed with an Ag/Ag+ half-cell and a Pb/Pb2+ half-cell. Measurement shows that thesilver electrode is positive. -Write balanced half-reactions and the overall spontaneous reaction.

  4. Electrochemistry

    In lab, we did an experiment with electrochemical cells with solutions of ZnSO4, CuSO4, Al2(SO4)3 and MgSO4 and their respective metal electrodes. There are a couple of post-lab questions that I'm not sure about: (1) Summarize

  1. chemistry

    Write the standard cell notation for a galvanic cell with a silver cathode and a zinc anode.

  2. science

    Which of the follow comparisons would be an inaccurate analogy between prokaryotic cells and eukaryotic cells? A - A eukaryotic cell is like a college campus was a prokaryotic cell is like a one-room schoolhouse B - A eukaryotic

  3. Science

    What is true of all body cells except sex cells? A) Each cell type carries chromosomes and genes that identify it as that specific type of cell. For example, skin cells have different chromosomes and genes than muscle cells. B)

  4. Chemistry

    A galvanic cell consists of La^3+/La half-cell and a standard hydrogen electrode. If the La^3+/La half cell functions as the anode and the cell potential is 2.52 V, what is the reduction potential for the La^3+/La half cell? the

  1. Science

    Which of the following is not part of the cell theory? (1 point) Cells are the building blocks of life. All living things are made up of cells. All cells are created from other cells through cell division. The nucleus is the

  2. Easy chemistry

    Which statement correctly identifies how a lead-storage battery in a car works? A. The battery acts as a galvanic cell as it provides current to the radio. B. The battery acts as a galvanic cell as it is recharged by the

  3. Chemistry (Electrochemistry)

    The standard potential for the following galvanic cell is 1.72V : Be(s)|Be2+(aq)||Pb2+(aq)|Pb(s) The standard reduction potential for the Pb2+/Pb half-cell: E = -.13V Calculate the standard reduction potential for the Be2+/Be

  4. chemistry

    A chemist wishes to determine the concentration of CrO4-2 ions electrochemically. A cell is constructed consisting of saturated calomel electrode (SCE) and a silver wire coated with Ag2CrO4. The SCE is composed of mercury in

You can view more similar questions or ask a new question.