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  2. Ammonium nitrate - Wikipedia

    en.wikipedia.org/wiki/Ammonium_nitrate

    NH 4 NO 3 → N 2 O + 2 H 2 O. At higher temperatures, the following reaction predominates. [13] 2 NH 4 NO 32 N 2 + O 2 + 4 H 2 O. Both decomposition reactions are exothermic and their products are gases. Under certain conditions, this can lead to a runaway reaction, with the decomposition process becoming explosive. [14]

  3. Exothermic reaction - Wikipedia

    en.wikipedia.org/wiki/Exothermic_reaction

    The thermite reaction is famously exothermic. The reduction of iron(III) oxide by aluminium releases sufficient heat to yield molten iron. In thermochemistry, an exothermic reaction is a "reaction for which the overall standard enthalpy change ΔH⚬ is negative." [1] [2] Exothermic reactions usually release heat.

  4. Nitrogen cycle - Wikipedia

    en.wikipedia.org/wiki/Nitrogen_cycle

    NH + 4 + NO − 2 → N 2 + 2 H 2 O (ΔG° = −357 kJ⋅mol −1). [32] This an exergonic process (here also an exothermic reaction) releasing energy, as indicated by the negative value of ΔG°, the difference in Gibbs free energy between the products of reaction and the reagents.

  5. Exothermic process - Wikipedia

    en.wikipedia.org/wiki/Exothermic_process

    An exothermic thermite reaction using iron(III) oxide. The sparks flying outwards are globules of molten iron trailing smoke in their wake. Some examples of exothermic processes are: [14] Combustion of fuels such as wood, coal and oil/petroleum; The thermite reaction [15] The reaction of alkali metals and other highly electropositive metals ...

  6. Nitrification - Wikipedia

    en.wikipedia.org/wiki/Nitrification

    The conversion of ammonia to hydroxylamine is the first step in nitrification, where AH 2 represents a range of potential electron donors. NH 3 + AH 2 + O 2 → NH 2 OH + A + H 2 O. This reaction is catalyzed by AMO. Inhibitors of this reaction bind to the active site on AMO and prevent or delay the process.

  7. Thermochemical equation - Wikipedia

    en.wikipedia.org/wiki/Thermochemical_equation

    Another example involving thermochemical equations is that when methane gas is combusted, heat is released, making the reaction exothermic. In the process, 890.4 kJ of heat is released per mole of reactants, so the heat is written as a product of the reaction.

  8. Gold just saw its biggest yearly gain since 2010 — here's why ...

    www.aol.com/finance/gold-just-saw-biggest-yearly...

    Wall Street analysts expect gold's rally to keep going in 2025 after the precious metal saw its biggest annual jump in 14 years. On Thursday, gold futures jumped more than 1% to hover above $2,670 ...

  9. Sodium nitrate - Wikipedia

    en.wikipedia.org/wiki/Sodium_nitrate

    HNO 3 + NaHCO 3 → NaNO 3 + H 2 O + CO 2. or also by neutralizing it with sodium hydroxide (however, this reaction is very exothermic): HNO 3 + NaOH → NaNO 3 + H 2 O. or by mixing stoichiometric amounts of ammonium nitrate and sodium hydroxide, sodium bicarbonate or sodium carbonate: NH 4 NO 3 + NaOH → NaNO 3 + NH 4 OH NH 4 NO 3 + NaHCO 3 ...