Question: uses of acids? 

Answer: There are numerous uses for acids.\n\nCar batteries\nCar batteries use sulfuric acid to help create and \nstore electricity. Sulfuric acid is a very strong acid that will eat a hole in a piece of iron, as well as eat through your clothes and skin. You should always use extreme caution when handling a car battery.\n\nStomach acids\nYour stomach has acids that help break down and digest food you have eaten. Concentrated stomach acid can irritate your stomach lining and even eat a hole in it.\n\nAntacid\nIf the body has secreted excess acid, because it is having trouble digesting the food you have eaten, you can get a burning pain in your stomach area. If you take an antacid, it will buffer the stomach acid.\n\nSome antacids contain a base-type chemical compound. Adding a base to an acid neutralizes the acid and produces water and a salt.\n\nAspirin \nAspirin is an acid and can irritate you if taken on an empty stomach. Buffered aspirin has a small amount of antacid to neutralize the acidic effect on you.\n\nOther uses\nAcids are used in industry both to dissolve materials and to create new compounds. We drink very mild acids in our carbonated and fruit drinks.
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