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  • Woah! It's raining! At least it's not acidic like acid rain!
  • Actually, rain is acidic. Pure rainwater is naturally acidic with a pH of 5.65 due to the presence of dissolved carbon dioxide.
  • Why?
  • Well it is because of something called acid deposition - The process by which acidic particles, gases, and precipitation leave the atmosphere.
  • Oh yeah, I heard that sulfur and nitrogen cause that, but how?
  • Sulfur dioxide occurs naturally from volcanoes. It is produced industrially from the combustion of sulfur-containing fossil fuels and the smelting of sulfide ores. When reacted with water, SO2 can be oxidised to form sulfurous acid and sulfuric acid. Nitrogen oxides occur naturally from electral storms and bacterial action. When reacted with water, NO2 can be oxidised to become nitrous acid and nitric acid
  • What's so bad about acid rain anyways?
  • It can do many bad things, the increased aluminium ions in water can kill fish, buildings made with marble, which contains calcium carbonate, can be eroded, and the increased acidity in soil leaches important nutrients from the ground.
  • Well is there anything we can do about it?
  • One thing we can do is lower the amounts of nitrogen and sulfur formed by improving engine designs and adding the use of catalytic converters. Another is to switch to alternative forms of energy to reduce the amount of fuel burned. And the third thing we can do is the liming of lakes, adding calcium hydroxide (lime) neutralises the acidity of acid rain!
  • Wow thanks for all your help!
  • No problem! I'd to anything for the environment!
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