Even trying to smell a strong acid is not a good idea, because the fumes can burn your nostrils. Stomach acids Your 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. If 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.
Some antacids contain a base-type chemical compound.
Adding a base to an acid neutralizes the acid and produces water and a salt. Aspirin 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. Working with acids Acids usually must be mixed with water to dilute them and make them more usable. Although they dissolve in water, they also can react and bubble when mixed with water.