what is a ph
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- What is pH. pH is a measure of the hydorgen ion concentration of a solution. Solutions with a high concentration of hydrogen ions have a low pH and solutions with a low concentrations of H+ ions have a high pH. This may seem like a confusion way to express these reationships, and it is, until you understand what pH stands for.
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- An acid (from the Latin acidus/acēre meaning sour) is a chemical substance whose aqueous solutions are characterized by a sour taste, the ability to turn blue litmus red, and the ability to react with bases and certain metals (like calcium) to form salts. Aqueous solutions of acids have a pH of less than 7. Non-aqueous acids are usually formed when an anion (negative ion) reacts with one or more positively charged hydrogen cations. A lower pH means a higher acidity, and thus a higher concentration of positive hydrogen ions in the solution.
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All-1B-allanswer - CHAPTER 14 CHEMICAL KINETICS PRACTICE... pH. the negative logarithm of the hydrogen ion concentration [H+]; a measure of the degree to which a solution is acidic or alkaline. An acid is a substance that can give up a hydrogen ion (H+); a base is a substance that can accept H+.The more acidic a solution the greater the hydrogen ion concentration and the lower the pH; a pH of 7.0 indicates neutrality; a pH of less than 7 indicates acidity, and a pH of more than 7 indicates alkalinity.H. In chemistry, a measure of the hydrogen ion concentration of a solution. The degree of acidity or alkalinity of a substance is expressed in a pH value. A solution that is neither acid nor alkaline has a pH of 7.
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ph pH. A scale which gives a measure of the acidity of an aqueous solution. A neutral solution has a pH of 7; an acidic solution has a lower value, and an alkaline solution a higher value.
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pH In chemistry, pH (/piːˈeɪtʃ/) is a numeric scale used to specify the acidity or alkalinity of an aqueous solution. It is the negative of the logarithm to base 10 of the activity of the hydrogen ion. Solutions with a pH less than 7 are acidic and solutions with a pH greater than 7 are alkaline or basic.Pure water is neutral, being neither an acid nor a base. Contrary to popular belief, the pH value can be less than 0 or greater than 14 for very strong acids and bases respectively.he pH of aqueous solutions can be measured with a glass electrode and a pH meter, or indicator. pH is the negative of the logarithm to base 10 of the activity of the (solvated) hydronium ion, more often (albeit somewhat inaccurately) expressed as the measure of the hydronium ion concentration.
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- pH is a measure of the acidity of the solution. It describes the concentration of H+ or H3O+ ions in a solution. pH= -log10[H+]. Therefore, the lower the pH, the higher … the concentration of hydrogen atoms and the more acidic the solution.
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The P/H Scale The pH scale measures how acidic or basic a substance is. It ranges from 0 to 14. If a pH is lower than 7 it indicates the solution is an acid. If it is above 7 it is a base or Alkaline. If a pH is a 7 it is neutral. Strong acids have lower pHs than weak acids and strong bases have lower pHs than weak bases. A neutral solution is neither an acid or base. It has a pH of 7. Scientists use a pH number to show the strength of an acid or base. A pH is measured by dipping litmus into solution such as water or other substances.
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pH meters The pH (always written little p, big H) of a substance is an indication of how many hydrogen ions it forms in a certain volume of water. There's no absolute agreement on what pH actually stands for, but most people define it as something like power of hydrogen or potential of hydrogen..
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What is a pH scale? A pH scale is a measurement system used to indicate the concentration of hydrogen ions in solution; ranges from 0 to 14. In other words, the pH scale shows the acidity or basi…city of a substance. 7 is when the pH of something becomes neutral, for instance, water.
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- Answer   pH is the cologarithm of the activity of dissolved H+ (or sometimes written H3O+) ions (aka. Protons) in a solution, and measures the acidity/basicity of it. The Danish chemist Soeren Søren Peder Lauritz soerensen sørensen came up with the idea. in 1909
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- What is pH. pH is a measure of the hydorgen ion concentration of a solution. Solutions with a high concentration of hydrogen ions have a low pH and solutions with a low concentrations of H+ ions have a high pH.This may seem like a confusion way to express these reationships, and it is, until you understand what pH stands for.hat is pH. pH is a measure of the hydorgen ion concentration of a solution. Solutions with a high concentration of hydrogen ions have a low pH and solutions with a low concentrations of H+ ions have a high pH.
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pH scale Definition. A measure of acidity or alkalinity of water soluble substances (pH stands for 'potential of Hydrogen'). A pH value is a number from 1 to 14, with 7 as the middle (neutral) point. Values below 7 indicate acidity which increases as the number decreases, 1 being the most acidic. Values above 7 indicate alkalinity which increases as the number increases, 14 being the most alkaline.
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pH Definition - or what is pH? • The activity of hydrogen ions in solution determines the acidity or alkalinity of a solution. • The pH value is a measure of the H+ activity in a give solution. or if we combine the two previous statements: • The pH value is a measure of the acidity or alkalinity of a solution. • The range of the pH scale is from 0 to 14. • The pH defintion: the negative logarithm of the H+ activity in a given solution.
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Describe the pH scale and what it measures??? The pH scale measures how acidic or basic a substance is. The pH scale ranges from 0 to 14. A pH of 7 is neutral. A pH less than 7 is acidic. A pH greater than 7 is basic. The pH scale is logarithmic and as a result, each whole pH value below 7 is ten times more acidic than the next higher value. For example, pH 4 is ten times more acidic than pH 5 and 100 times (10 times 10) more acidic than pH 6.
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pH Define pH: a measure of acidity and alkalinity of a solution that is a number on a scale on which a value of 7 represents… — pH in a sentence a measure of acidity and alkalinity of a solution that is a number on a scale on which a value of 7 represents neutrality and lower numbers…
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- pH: Definition and measurement units. pH is a measure of how acidic/basic water is. The range goes from 0 - 14, with 7 being neutral. pHs of less than 7 indicate acidity, whereas a pH of greater than 7 indicates a base. pH is really a measure of the relative amount of free hydrogen and hydroxyl ions in the water. Water that has more free hydrogen ions is acidic, whereas water that has more free hydroxyl ions is basic.
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Vaginal pH Balance: Understanding Intimate Health What is pH? PH is a scale of acidity and alkalinity. The measurements range from 0 to 14: a pH lower than 7 is acidic and a pH higher than 7 is considered alkaline. A healthy vaginal pH is between 3.8 and 4.5 – so the vagina is healthiest when it has an acidic pH level.
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ph A numerical measure of the acidity or alkalinity of a solution, usually measured on a scale of 0 to 14. Neutral solutions (such as pure water) have a pH of 7, acidic solutions have a pH lower than 7, and alkaline solutions have a pH higher than 7. The pH of lemon juice is 2.4; that of household ammonia is 11.5. The normal pH for human blood is 7.4.
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pH In chemistry, pH (/piːˈeɪtʃ/) is a numeric scale used to specify the acidity or alkalinity of an aqueous solution. It is the negative of the logarithm to base 10 of the activity of the hydrogen ion. Solutions with a pH less than 7 are acidic and solutions with a pH greater than 7 are alkaline or basic. Pure water is neutral, being neither an acid nor a base. Contrary to popular belief, the pH value can be less than 0 or greater than 14 for very strong acids and bases respectively.
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pH Values Of Common Drinks A substance that is neither acidic nor basic is neutral. The pH scale measures how acidic or basic a substance is. It ranges from 0 to 14. A pH of 7, such as pure water is neutral. A pH less than 7 is acidic and greater than 7 is basic. Each whole pH value below 7 is ten times more acidic than the next higher value. For example, a pH of 4 is ten times more acidic than a pH of 5 and 100 times (10 x 10) more acidic than a pH of 6.
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- The Simple Definition. pH is a logarithmic measure of hydrogen ion concentration, originally defined by Danish biochemist S ren Peter Lauritz S rensen in 1909 [ 1 ]. pH = -log[H+]. where log is a base-10 logarithm and [H+] is the concentration of hydrogen ions in moles per liter of solution.
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- Medical Definition of Blood pH. Blood pH: The acidity or alkalinity of blood. The pH of any fluid is the measure of the hydrogen ion (H-) concentration. A pH of 7 is neutral. The lower the pH, the more acidic the blood. A variety of factors affect blood pH including what is ingested, vomiting, diarrhea, lung function, endocrine function, kidney function, and urinary tract infection.
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ph pH. n. 1. (Chemistry) potential of hydrogen; a measure of the acidity or alkalinity of a solution equal to the common logarithm of the reciprocal of the concentration of hydrogen ions in moles per cubic decimetre of solution.
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pH paranoia: Understanding alkaline water claims The pH level is a quantitative measure of the hydrogen ions representing the acidity or alkalinity of a solution. The acidic solution has more free hydrogen ions and the alkaline solution has fewer free hydrogen ions. Any substance that lowers pH is an acid and any substance that raises it is a base.
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- Quick Answer. The scientific term pH is an abbreviation that stands for potential of hydrogen, which is a measure of the acidity or alkalinity of a solution.The term, which first came into use in 1909, is Germanic in origin and is derived from the word potenz, meaning power, plus H, which is the symbol for hydrogen on the periodic table. Continue Reading.
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What is pH? A pH (potential of Hydrogen) measurement reveals if a solution is acidic or alkaline (also base or basic). If the solution has an equal amount of acidic and alkaline molecules, the pH is considered neutral. Very soft water is commonly acidic, while very hard water is commonly alkaline, though unusual circumstances can result in exceptions.