Acid (English: acid, comes from the Latin acidus / acere means "sour") is a substance which reacts with a base, in general, the acids can be identified with a sour taste,The properties and reaction with metals such as calcium. Base like sodium carbonate and acid soluble have pH less 7 without acid strength based on the value pH payables, and change the litmus paper blue to red
.A common example of acid and acetic acid (vinegar), sulfuric acid (in the car), batteryAnd the tartaric acid (pastry) as three examples above, acid can be either a solution of liquid or solid to gas. Hydrogen chloride is acid. Strong acid weak acid concentration and some are corrosive,Such as car park and boric acid
.Definition of acid in general, there are three definition, including the definition of Arrhenius definition I received two - Lowry and definition Liu is defined Arrhenius said that acid. Substances that increase the concentration of hydrogen ions (H3O tradition) in solution.Acid is a substance which can act to proton. Mostly found in everyday life is the acid aqueous solution or can dissolve in water, and two นิยามนี้ related as cause of acid pH less 7.10-7 mol / L. because pH, defined as the negative logarithm of the concentration of hydrogen ion in tradition. So acid have pH less 7 by definition I received two - Lowry. The compound, which can be easily determined that proton acidWhich is the O-H or N-H
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