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Related Concept Videos

Balancing Redox Equations02:58

Balancing Redox Equations

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Electrochemistry is the science involved in the interconversion of electrical and chemical reactions. Such reactions are called reduction-oxidation, or redox reactions. These important reactions are defined by changes in oxidation states for one or more reactant elements and include a subset of reactions involving the transfer of electrons between reactant species. Electrochemistry as a field has evolved to yield sufficient insights on the fundamental principles of redox chemistry and multiple...
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The Nernst Equation02:59

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Nonstandard Reaction Conditions
The interconnection between standard cell potentials and various thermodynamic parameters such as the standard free energy change ΔG° and equilibrium constant K has been previously explored. For example, a redox reaction involving zinc(II) and tin(II) ions at 1 M concentration with Eºcell = +0.291 V and ΔG° = −56.2 kJ is spontaneous.
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Redox Reactions01:24

Redox Reactions

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Oxidation-reduction or redox reactions involve the transfer of electrons from one molecule or atom to another. When an atom gains an electron, another atom must lose an electron, meaning oxidation and reduction must occur together. Since the redox occurs in pairs, the atom that gets oxidized is also called the reducing agent or reductant, and the atom that is reduced is also called the oxidizing agent or oxidant. A straightforward way to remember the definitions of oxidation and reduction is...
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Redox Reactions01:27

Redox Reactions

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Redox reactions are vital biochemical processes that underpin energy metabolism in cells. These reactions involve the transfer of electrons between molecules, occurring in tandem as oxidation and reduction. Oxidation refers to the loss of electrons, while reduction denotes their gain. This coupling ensures the seamless flow of electrons through metabolic pathways. For example, in bacterial metabolism, glucose undergoes oxidation to carbon dioxide, while oxygen is simultaneously reduced to...
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Chemical Equations03:10

Chemical Equations

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Chemical equations represent the identities and relative quantities of substances involved in a chemical reaction. The substances undergoing reaction are called reactants, and their formulas are placed on the left side of the equation. The substances generated by the reaction are called products, and their formulas are placed on the right side of the equation. Plus signs (+) separate individual reactant and product formulas, and an arrow (→) separates the reactant and product (left and right)...
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Clausius-Clapeyron Equation02:35

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The equilibrium between a liquid and its vapor depends on the temperature of the system; a rise in temperature causes a corresponding rise in the vapor pressure of its liquid. The Clausius-Clapeyron equation gives the quantitative relation between a substance’s vapor pressure (P) and its temperature (T); it predicts the rate at which vapor pressure increases per unit increase in temperature.
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Cellular Redox Profiling Using High-content Microscopy
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Cellular Redox Profiling Using High-content Microscopy

Published on: May 14, 2017

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Equations to Support Redox Experimentation.

John T Hancock1, Matthew Whiteman2

  • 1Department of Applied Sciences, University of the West of England, Bristol, UK. john.hancock@uwe.ac.uk.

Methods in Molecular Biology (Clifton, N.J.)
|June 1, 2019
PubMed
Summary
This summary is machine-generated.

Understanding the oxidation-reduction (redox) state of compounds is crucial in biology. Equations help determine redox poise and compound states, impacting cellular functions like signaling.

Keywords:
ApoptosisCytochrome cHydrogen peroxideHydrogen sulfideNernst equationRedox coupleRedox environmentRedox stateThiol modifications

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Area of Science:

  • Biochemistry
  • Molecular Biology
  • Cell Biology

Background:

  • Cellular redox state is critical for biological processes.
  • The local environment, including protein structures, influences compound redox states.
  • Improper redox states can lead to inactive compounds and affect cellular functions.

Purpose of the Study:

  • To discuss the application of historical equations for determining redox states.
  • To highlight the significance of redox state in biological systems.
  • To provide examples of relevance in modern redox biology.

Main Methods:

  • Review of established equations for redox potential calculation.
  • Analysis of factors influencing redox states in biological environments.
  • Case studies illustrating the impact of redox state on cellular processes.

Main Results:

  • Equations provide a quantitative method to assess redox poise and compound states.
  • Local microenvironments significantly modulate the redox state of biomolecules.
  • Correct redox states are essential for proper enzyme function and cell signaling pathways.

Conclusions:

  • The accurate determination of redox states is fundamental to understanding biological mechanisms.
  • Application of redox equations is vital for interpreting experimental data in redox biology.
  • Understanding redox environments is key to unraveling complex cellular signaling.