Proton Donation
Proton Donation - Related Videos
09:40
Proton Exchange Membrane Fuel Cells
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2023
Source: Laboratories of Margaret Workman and Kimberly Frye - Depaul University The United States consumes a large amount of energy – the current rate is around 97.5 quadrillion BTUs annually. The vast majority (90%) of this energy comes from non-renewable fuel sources. This energy is used for electricity (39%), transportation (28%), industry (22%), and residential/commercial use (11%). As the world has a limited supply of these non-renewable sources, the United States (among others) is...
07:08
A High-Fidelity Porcine Model of Orthotopic Heart Transplantation Following Donation after Circulatory Death
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Cited by 2 •
2025
The protocol here describes a high-fidelity porcine model of heart transplantation following donation after circulatory death utilizing ex vivo perfusion of the allograft.
01:07
Proton (¹H) NMR: Chemical Shift
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2024
Organic molecules primarily contain carbon and hydrogen atoms. While all the hydrogen isotopes are NMR-active, protium or hydrogen-1 is the most abundant. It has a significant energy separation between its nuclear spin states due to its large gyromagnetic ratio. As per Boltzmann's distribution, an increase in the energy separation implies a greater excess population of nuclei available for excitation, resulting in a strong NMR absorption signal. Absorption signals of all the protium nuclei in a...
08:56
Study of Experimental Organ Donation Models for Lung Transplantation
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Cited by 2 •
2024
The present study shows the establishment of three different lung donation models (post-brain death donation, post-circulatory death donation, and post-hemorrhagic shock donation). It compares the inflammatory processes and pathological disorders associated with these events.
07:38
Functional Characterization of Na+/H+ Exchangers of Intracellular Compartments Using Proton-killing Selection to Express Them at the Plasma Membrane
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Cited by 4 •
2015
The first part of this article shows how to select mutant cell lines expressing vesicular Na+/H+ exchangers at their plasma membrane. The second part provides protocols based on intracellular pH measurements and fast ion uptake, which are used to determine the ion selectivity and the kinetic parameters of these exchangers.
FAQs
The position of the acid–base equilibrium depends mainly on the relative strengths of the proton donor and its conjugate base, while solvent and concentration also influence the balance. Donation is therefore not automatically complete. Examining these variables helps chemists predict whether a reaction favors formation of the conjugate base and proton acceptor or retains more starting material.
The conjugate base is the species that remains after the acid loses a proton, so its stability affects the equilibrium and the acid’s effective strength. A more favorable conjugate-base state supports greater proton transfer. Tracking this product allows chemists to connect molecular reaction steps with observable acid–base behavior, including ionization and neutralization.
A solvent can change the balance of an acid–base equilibrium by affecting the chemical environment of the reacting species. Consequently, the same proton donor and acceptor may show different donation behavior in different solvents. Considering solvent effects is essential when interpreting acid strength, predicting equilibrium position, or comparing ionization behavior across chemical systems.
Acid strength describes how favorably a species donates a proton relative to its conjugate base, whereas concentration describes how much of each species is present. Changing concentration can shift the composition of an equilibrium without changing the underlying relative strength. Separating these ideas helps prevent incorrect conclusions when analyzing pH, ionization, or reaction mixtures.
An analysis can identify the proton donor and acceptor, determine the resulting conjugate base, and then consider solvent, concentration, and relative acid strength. These factors indicate the likely equilibrium composition. The same framework helps interpret pH changes, recognize neutralization behavior, and explain why a reaction may produce substantial ionization or remain partly reversible.
Proton donation provides a framework for studying pH, ionization, neutralization, and buffer action across chemistry. It also supports reaction-mechanism analysis and the design or interpretation of chemical processes in biological systems, materials science, environmental studies, and pharmaceutical research. In each setting, proton-transfer behavior connects molecular interactions with the properties of the larger chemical system.