Observe the diagram and describe the electrochemistry involved in each battery. 2. Button batteryNegative electrode (zinc)Negative capAbsorberGasketSeparatorPositive canPositive electrode (manganese dioxide)3. Fuel cellsotectivesingPositiveterminal3el Cell StackKeyProtoetNegativeterminalOrygnAnodeCathodeHydrogenH, FuelOrygen0, From AirCel dividerPositive electrode(kead dioxde)H, lecycingAr andWater VapourNegative electrode(lead)Gas Difinion Layer CatalstCatalynt Gas Dfusion LayerPoton Exchange Membrane- Dlute H,S0.4. Lead storage batteryOpening toadd waterH,SO,and waterPositive plates:lead grills filledwith Pbo,SeparatorNegative plates:lead grills filledwith spongy leadHEAT

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Chemistry

Negative electrode

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter7: Statistical Data Treatment And Evaluation

Section: Chapter Questions

Problem 7.20QAP

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Question

Observe the diagram and describe the electrochemistry involved in each battery.

2. Button battery
Negative electrode (zinc)
Negative cap
Absorber
Gasket
Separator
Positive can
Positive electrode (manganese dioxide)
3. Fuel cells
otective
sing
Positive
terminal
3el Cell Stack
Key
Proto
et
Negative
terminal
Orygn
Anode
Cathode
Hydrogen
H, Fuel
Orygen
0, From Air
Cel divider
Positive electrode
(kead dioxde)
H, lecycing
Ar and
Water Vapour
Negative electrode
(lead)
Gas Difinion Layer Catalst
Catalynt Gas Dfusion Layer
Poton Exchange Membrane
- Dlute H,S0.
4. Lead storage battery
Opening to
add water
H,SO,
and water
Positive plates:
lead grills filled
with Pbo,
Separator
Negative plates:
lead grills filled
with spongy lead
HEAT

Definition Definition Study of chemical reactions that result in the production of electrical energy. Electrochemistry focuses particularly on how chemical energy is converted into electrical energy and vice-versa. This energy is used in various kinds of cells, batteries, and appliances. Most electrochemical reactions involve oxidation and reduction.

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