Where was the pH scale first discovered?
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The person who introduced the concept of the pH scale was Søren Peder Lauritz Sørensen. He was born in Denmark and was head of a laboratory in Copenhagen, Denmark's capital. It's hard to say exactly where the scale was introduced since it was introduced around 1901, but it is most likely in this laboratory that he discovered it.
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acid has a ph value below 7\nand alkali has a value above 7\n\nAn acid (often represented by the generic formula HA) is traditionally considered any chemical compound that when dissolved in water, gives a solution with a pH of less than 7. That approximates the modern definition of Brønsted and Lowry, who defined an acid as a compound which donates a hydrogen ion (H+) to another compound (called a base). Common examples include acetic acid (in vinegar) and sulfuric acid (used in car batteries). Acids generally taste sour;\n\nIn chemistry, an alkali (from Arabic: al-qaly القالي) is a specific type of base, formed as a carbonate, hydroxide or other basic (pH greater than 7) ionic salt of an alkali metal or alkali earth metal element. The word alkali or the adjective alkaline are frequently used to refer to all bases, since most common bases are alkalis, although strictly speaking this is inaccurate.
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Friend,\n           Lord John Kelvin invented the Kelvin scale.\n           Adriano Celsius invented the celsius scale.\n           Witzer Fahrenheit invented the Fahrenheit scale.\n            \n            c=k+273\n             f=32+(9/5)*c
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Normal ph level is 7.35-7.45
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acidity has three different definations.\nLewis Acids - a substance capable of accepting as=n unshared electron from a base to form a dative covalent bond.\nArrhenius Acid - a Hydrogen containing compound that ionises and releases protons, [H+] in an aquous solution,\nBronsted Acid - a substances consisting of molecules or ions which donates protons, [H+].\nif any substances adhere to any of the three conditions, it is an acid. \nthe common theory is the Bronsted theory. this is where the term pH is introduced, where pH means 'potential of H+'. a solution with more H+ ions then OH- ions is an acidic solution. the pH is generally <7. however, this standard varies with temperature, and the concentration of the solute(water). \na general apparatus to determined is the blue litmus paper. it'll turn red on contact with acidic solutions.
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Carl Wilhelm Scheele discovered it in 1772, and Joseph Priestly found it in 1774 (independently).  Scheele was a Swede, Priestly was an Englishman.
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The discovery of oxygen
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The pH level. 7 is neutral. Below 7 is acidic and above 7 is basic. 1 being most acidic and 14 being most basic.
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The question makes no sense.  A single, isolated anion has no pH value.  pH refers to the H+ concentration in aqueous solutions.
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use the equation  pH= -lgKa+ lg( salt/acid)\n(this equation only applies for buffer system)
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pH (potential hydrogen) is a measure of the activity of hydrogen ions (H+) in a solution and, therefore, its acidity or alkalinity. In aqueous systems, the hydrogen ion activity is dictated by the dissociation constant of water (Kw = 1.011 × 10−14 at 25 °C) and interactions with other ions in solution. Due to this dissociation constant a neutral solution (hydrogen ion activity equals hydroxide ion activity) has a pH of approximately 7. Aqueous solutions with pH values lower than 7 are considered acidic, while pH values higher than 7 are considered alkaline..\n\npH = -log(concentration of H+)\njust use the equation to figure it out.\nhttp://en.wikipedia.org/wiki/PH
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The pH scale is logarhytmic- it goes up by powers of ten.\n\nFrom pH 2 to pH 1, there is 10 times the H+ concentration.\nFrom pH 3 to pH 1, there is 100 times the H+ concentration.\nAnd so on.\n\nTo answer your question, the pH will become more acidic by 3 points.
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ok...we have a deal. No Google :)\n\nI use MS Encarta as one of my "Resources" to get information or I go to the the Local library...still very nice to read or do research in a Public or school library.\n\n Sodium Phosphate was Discovered by Puller, in Crefeld and patented by him.\n\nHope my answer assists you. Chow
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Yes, as above, and pH is defined as the negative log of the hydrogen ion concentration.
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Well for your information i would like to tell you that the pH value of lemonn is 2.5. Still if you wold like to find out, you could use either pH strips which indicate a pH  range to you or use a pH meter. This will give you the exact pH value. All the best!!
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Phosphoric Acid, H3PO4.
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a) neutral\nb) basic\nc) basic\nd) acidic\ne) acidic if in solution\nf) basic.\n\npH is a scale ranging from 0-14.  7 is the intermediate and a pH of 7 means that the solution is neutral.  If the pH is below 7, then there are more H+ than OH- in the solution.  Hence the solution becomes acidic.  If the pH however is greater than 7, then there is less H+ than OH- in the solution and the solution is basic.\n\nFor the acid H2SO4, when in solution, it will dissociate to form H+ and SO4-.  The H+ gives the acid its acidic property.  Similarly when Ca(OH)2 is dissolved, it dissociates into Ca2+ and OH-.  The OH- gives the compound its basic property.