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什么是酸雨?酸雨是怎样形成的?从地面、水面及植物体蒸发和蒸腾所形成的水蒸气,在变成雨雪降落到地面的过程中,经过与大气中各种成分的复杂反应,改变了化学性质。大气中的二氧化碳溶解于水蒸汽变成碳酸,大气中其它化学成分也参与了同水蒸气的化学反应,使水蒸气的pH值有变化,当pH值低于5.6的雨为酸雨,pH值愈小,酸性越强。这种带有硫酸和硝酸的雨称为酸雨。它的形成主要是由于工业化排放污染物,机动车辆以及家庭排放的硫氧化合物和氮氧化合物与潮湿的空气混合,凝结成酸化雨水降落而成。酸雨是大气污染的一种表现形式,酸雨通过已酸化的土壤、水体危害林木的生
What is acid rain? How is acid rain formed? The water vapor formed by the evaporation and transpiration of the ground, water surface and plant body changes into the rain and snow falling to the ground through the complex reaction with various components in the atmosphere The chemical nature. Atmospheric carbon dioxide dissolved in water vapor into carbon dioxide, the other chemical components of the atmosphere are also involved in the chemical reaction with water vapor, the water vapor pH changes, when the rain below pH 5.6 is acid rain, pH value more Small, acidic stronger. This rain with sulfuric acid and nitric acid is called acid rain. Its formation is mainly due to industrial emissions of pollutants, motor vehicles and family emissions of sulfur oxides and nitrogen oxides mixed with humid air, condensed into acid rain drops. Acid rain is a form of atmospheric pollution, acid rain through acidified soil, water hazards of forest health