为什么会下酸雨

酸雨是怎样形成的
2025-03-15 16:06:29
推荐回答(5个)
回答1:

酸雨是指PH值小于5.6的雨雪或其他形式的降水。雨、雪等在形成和降落过程中,吸收并溶解了空气中的二氧化硫、氮氧化合物等物质,形成了pH低于5.6的酸性降水。酸雨主要是人为的向大气中排放大量酸性物质所造成的。中国的酸雨主要因大量燃烧含硫量高的煤而形成的,多为硫酸雨,少为硝酸雨,此外,各种机动车排放的尾气也是形成酸雨的重要原因。我国一些地区已经成为酸雨多发区,酸雨污染的范围和程度已经引起人们的密切关注。
2SO2
+
O2
=
3SO3
SO3+H2O==H2SO4
氮氧化物与空气中的水结合最终会转化成硝酸和硝酸盐,硝酸是酸雨的成因之一
因此
二氧化硫
氮氧化物是环保上很关注的一个内容

回答2:

回答3:

简单地说,是人类燃烧一些化学燃料时产生的硫氧化物(煤、石油含硫)与氮氧化物(内燃机中空气中氮与氧反应),溶于水产生酸(硫酸、亚硫酸、硝酸)

回答4:

烧煤中有含硫物质,燃烧不完全就产生二氧化硫,到了云层结合水滴形成了亚硫酸,亚硫酸不稳定易被氧化就会形成硫酸,最后随雨下下来就是酸雨了
酸雨有腐蚀性对大理石建筑
还有庄稼植物

回答5:

硫酸

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