Chemistry

A galvanic cell is connected to a small light bulb for 40.0 minutes. The electrodes are
copper and silver and the copper electrode is immersed in a solution of copper sulfate.
During that time, the average current drawn by the bulb is 0.12 A.
a. What is more reactive, copper or silver?
b. Which is the anode and which is the cathode?
c. How many grams of copper dissolve from the (anode or cathode) during this
time?
d. If copper metal is ‘moving into solution’, is this an oxidation or reduction

  1. 👍
  2. 👎
  3. 👁
  1. a. I don't know what you mean with "more reactive" but the Eo oxidations values are shown below. Also I assume the Ag electrode is immersed in a silver salt of some kind. I presume you would say Cu is the more reactive metal.
    Cu ==> Cu^2+ + 2e Eo = -0.344 v
    Ag ==> Ag^+ + e Eo = -0.8
    b. The anode is defined as the electrode at which oxidation takes place. That is Cu.
    d. See b for the answer.
    c. Coulombs = amperes x seconds = ?= approx 300 but you need to do it more accurately. Then 96,485 coulombs will dissolve 63.54/2 grams Cu. So how much will dissolve with 300 coulombs. That will be
    63.54/2 x (approx 300/96,485) = ?

    1. 👍
    2. 👎
  2. thanks!

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. algebra

    The intensity I of light bulb measured in watts per square meter (w/m^2), varies inversely as the square of the distance d from the light bulb . . suppose I is 45 w/m^2 when the distance is 5 m . find the intensity when the

  2. chemistry

    The diameter of the tungsten wire in a light bulb filament is bery small, less than two thousandths of an inch, or about 1/20 mm. THe mass of the filament is so very small - 0.0176 grams - that it would take 1,600 filaments to

  3. Science

    An electric light is plugged into a 120-V outlet. If the current in the bulb is 0.5 A, how much electrical energy is used by the bulb in 15 minutes?

  4. Energy question

    How would a $10.00 compact fluorescent light bulb (15 W) be an overall money saver compared to an incandescent light bulb (60 W) that costs $0.50?

  1. algebra

    The light intensity of a light bulb varies inversely as the square of the distance from the light bulb. The function I(d) = k/d^2 models this situation, where I is the light intensity, d is the distance from a light source, and k

  2. Optics

    The famous Chinese magician Foo Ling Yu performs a classic magic trick using a concave mirror with a focal length of 1.6 m. Foo uses the mirror to produce an image of a light bulb that is the same size as the light bulb itself and

  3. 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

  4. Chemistry

    The following galvanic cell at standard conditions has a potential of 0.03 V: Ag+(aq) + Fe2+(aq) → Fe3+(aq) + Ag(s). What would be the effect of increasing the concentration of Ag+? A. The cell potential will decrease. B. The

  1. 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

  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. Math

    A fly starts out 2 meters from a light bulb, flies closer to the light then farther away, 2 meters again. At this point the fly goes toward the bulb again but hits the bulb and flies away. Find a function (it may be piecewise)

  4. Science

    Match these with the key terms (1) A form of energy that is always transferred from a warmer substance to a cooler one. (2) device that converts hear to a small amount of electric energy often used in temperature sensors. (3) A

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