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  2. Half-reaction - Wikipedia

    en.wikipedia.org/wiki/Half-reaction

    For oxidation-reduction reactions in acidic conditions, after balancing the atoms and oxidation numbers, one will need to add H + ions to balance the hydrogen ions in the half reaction. For oxidation-reduction reactions in basic conditions, after balancing the atoms and oxidation numbers, first treat it as an acidic solution and then add OH − ...

  3. Redox - Wikipedia

    en.wikipedia.org/wiki/Redox

    Electron transfer reactions are central to myriad processes and properties in soils, and redox potential, quantified as Eh (platinum electrode potential relative to the standard hydrogen electrode) or pe (analogous to pH as -log electron activity), is a master variable, along with pH, that controls and is governed by chemical reactions and ...

  4. Frost diagram - Wikipedia

    en.wikipedia.org/wiki/Frost_diagram

    Because H + ions participate into redox reactions to balance acid–base reactions related to the O 2− anions released in solution during reduction, or at the contrary consumed by oxidation reactions, according to Le Chatelier's principle, the oxidizing power of oxidizing agents is exacerbated under acidic conditions (2 H + + O 2− ⇌ H 2 O ...

  5. List of unsolved problems in chemistry - Wikipedia

    en.wikipedia.org/wiki/List_of_unsolved_problems...

    Why are accelerated kinetics observed for some organic reactions at the water-organic interface? [5] [non-primary source needed] Do replacement reactions of aryl diazonium salts (dediazotizations) predominantly undergo S N 1 or a radical mechanism? [6] Can an electrochemical cell reliably perform organic redox reactions? [7]

  6. Oxidation state - Wikipedia

    en.wikipedia.org/wiki/Oxidation_state

    The increase in the oxidation state of an atom, through a chemical reaction, is known as oxidation; a decrease in oxidation state is known as a reduction. Such reactions involve the formal transfer of electrons: a net gain in electrons being a reduction, and a net loss of electrons being oxidation. For pure elements, the oxidation state is zero.

  7. Chemical reaction - Wikipedia

    en.wikipedia.org/wiki/Chemical_reaction

    Illustration of a redox reaction Sodium chloride is formed through the redox reaction of sodium metal and chlorine gas. Redox reactions can be understood in terms of the transfer of electrons from one involved species (reducing agent) to another (oxidizing agent). In this process, the former species is oxidized and the latter is reduced. Though ...

  8. Electrochemical cell - Wikipedia

    en.wikipedia.org/wiki/Electrochemical_cell

    An electrolytic cell is an electrochemical cell in which applied electrical energy drives a non-spontaneous redox reaction. [5] A modern electrolytic cell consisting of two half reactions, two electrodes, a salt bridge, voltmeter, and a battery. They are often used to decompose chemical compounds, in a process called electrolysis.

  9. Redox gradient - Wikipedia

    en.wikipedia.org/wiki/Redox_gradient

    A redox gradient is a series of reduction-oxidation reactions sorted according to redox potential. [ 4 ] [ 5 ] The redox ladder displays the order in which redox reactions occur based on the free energy gained from redox pairs.