Electrode And Electrolyte Determination Given A Redox Reaction

**Strings (S _{i}P_{j}A_{jk}) = S_{7}P_{5}A_{52} Base Sequence = 12735 String Sequence = 12735 - 5 - 52 **

Expressions Of Pj Problems

Electrode And Electrolyte Determination Given A Redox Reaction

Math

Pj Problems - Overview

Celestial Stars

The Number Line

Geometries

7 Spaces Of Interest - Overview

Triadic Unit Mesh

Creation

The Atom

Survival

Energy

Light

Heat

Sound

Music

Language

Stories

Work

States Of Matter

Buoyancy

Nuclear Reactions

Molecular Shapes

Electron Configurations

Chemical Bonds

Energy Conversion

Chemical Reactions

Electromagnetism

Continuity

Growth

Human-cells

Proteins

Nucleic Acids

COHN - Natures Engineering Of The Human Body

The Human-Body Systems

Vision

Walking

Behaviors

Sensors Sensings

Beauty

Faith, Love, Charity

Photosynthesis

Weather

Systems

Algorithms

Tools

Networks

Search

Differential Calculus

Antiderivative

Integral Calculus

Economies

Inflation

Markets

Money Supply

Painting

Figure 15.7 is a conceptual sketch of the construction of a galvanic cell based on the following spontaneous reaction:

3Fe(s) + 2Au^{3+} --------> 3Fe^{2+} + 2Au(s)

(a) Determine electrodes A and B, and electrolytes A and B in figure 15.7.

(b) What is the sign of the change in enthalpy for this reaction?

**The strings**:

S_{7}P_{5}A_{52} (Change - Chemical Change)
**The math**:

Pj Problem of Interest is of type *change* (chemical change). This problem is also an *identity* problem because we are determining the identities of the electrodes and electrolytes from the given redox reaction. However, the Pj Problem of Interest is cast as of type *change* because of the underlying chemical reaction in which the electrodes and electrolytes are participants.

The half-reactions of the cell are as follows:

Half-reaction at the anode:

Fe(s) -------> Fe^{2+} + 2e^{-} oxidation reaction.

Half-reaction at the cathode:

Au^{3+} + 3e^{-} -------> Au(s) reduction reaction

So, Electrode A (the anode) is an iron electrode and electrolyte A is a solution containing Fe^{2+} ions (e.g FeSO_{4})

So, Electrode B (the cathode) is a gold electrode and electrolyte B is a solution containing A^{3+} ions (e.g. AuCl_{3})

The reaction is spontaneous, the enthalpy change ΔH is negative.

The *point* **.** is a mathematical abstraction. It has negligible size and a great sense of position. Consequently, it is front and center in abstract existential reasoning.

Single Variable Functions

Conics

Ordinary Differential Equations (ODEs)

Vector Spaces

Real Numbers

Separation Of Variables As Solution Method For Homogeneous Heat Flow Equation

Newton And Fourier Cooling Laws Applied To Heat Flow Boundary Conditions

Fourier Series

Derivation Of Heat Equation For A One-Dimensional Heat Flow

The Universe is composed of *matter* and *radiant energy*. *Matter* is any kind of *mass-energy* that moves with velocities less than the velocity of light. *Radiant energy* is any kind of *mass-energy* that moves with the velocity of light.

Periodic Table

Composition And Structure Of Matter

How Matter Gets Composed

How Matter Gets Composed (2)

Molecular Structure Of Matter

Molecular Shapes: Bond Length, Bond Angle

Molecular Shapes: Valence Shell Electron Pair Repulsion

Molecular Shapes: Orbital Hybridization

Molecular Shapes: Sigma Bonds Pi Bonds

Molecular Shapes: Non ABn Molecules

Molecular Orbital Theory

More Pj Problem Strings