黄铁矿氧化和解散的区别——地球科学堆栈交换江南电子竞技平台江南体育网页版 最近30从www.hoelymoley.com 2023 - 08 - 26 - t20:18:38z //www.hoelymoley.com/feeds/question/13199 https://creativecommons.org/licenses/by-sa/4.0/rdf //www.hoelymoley.com/q/13199 5 黄铁矿氧化和分解之间的区别 chrisuw92 //www.hoelymoley.com/users/11471 2018 - 01 - 27 t07:46:26z 2018 - 01 - 28 - t09:23:13z < p >我看过论文用黄铁矿的氧化和解散。这两个过程是一样的吗?我总是在印象中,黄铁矿不容易溶解。什么是黄铁矿的氧化和解散的区别吗?< / p > //www.hoelymoley.com/questions/13199/-/13210 # 13210 4 回答由Gimelist黄铁矿氧化和分解之间的区别 Gimelist //www.hoelymoley.com/users/725 2018 - 01 - 28 - t09:23:13z 2018 - 01 - 28 - t09:23:13z < p >氧化和解散不相同的过程,但是他们在讨论有关在近地表环境中黄铁矿的崩溃。< / p > < p >解散是一个过程(* 1)的化学成分固体变成液体,液体状态。例如,新鲜的水和盐。现在盐溶解于淡水。而不是生理盐水和2 H <子> < /订阅>啊,您现在有H <子> 2与Na <一口> < /订阅> O + < /一口>和Cl <一口> - < /一口>离子漂浮,不稳固了。这不是很容易与黄铁矿。你不能转储FeS2水和希望菲<一口> 2 + < /一口>和S <一口>(2)——< /一口>在水里。这是因为硫的状态,降低硫化< em > < / em >。更可溶硫的形式是硫酸< em > < / em >、氧化形式。< / p >

Oxidation is a process in which a compound or element bonds with (more) oxygen(*2). In order to dissolve pyrite, you have to convert the insoluble sulfide to soluble sulfate. In your previous question you noted the oxidation reaction for pyrite:

$\ce{FeS2(s) + 15/4 O2(aq) + 7/2 H2O → Fe(OH)3(s) + 4H+(aq) + 2SO4^2-(aq)}$

You start with pyrite in the solid form, and you end up with sulfate (sulfur bonded to four oxygens). The leftover iron is deposited as insoluble iron oxides and hydroxides (basically - rust), and you're also generating a bunch of protons that make everything acidic (i.e. acid mine drainage).

*1 - strictly speaking, dissolution doesn't have to be a solid in a liquid. It can be anything in anything.

*2 - actually oxidation is an electron transfer reaction and can occur with no oxygen involved at all.
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