what does the ph. of a solution indicate?
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What does the pH of a solution indicate? The pH of a solution indicates the concentration of free H+ ions in solution on a negative log base 10 scale. Low pH (acidic) means high H+ concentration High pH (basic) means low H+ concentration.
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- 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. The pH is used as a measure of whether the body is maintaining a normal acid-base balance.
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What does pH have to do with hydrogen ions? Best Answer: pH is a measure of the concentration of hydrogen ions in solution -- i.e. - the acidity of the solution. The lower the value of pH, the more acidic the solution is. An acidic solution with [H+] = 10^-3 would have a pH of 3; an alkaline solution with [H+] = 10^-10 ould have a pH of 10. pH + pOH = 14!
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Using pH as a Health Monitor pH: What does it mean? pH is the abbreviation for potential hydrogen. The pH of any solution is the measure of its hydrogen-ion concentration. The higher the pH reading, the more alkaline and oxygen rich the fluid is. The lower the pH reading, the more acidic and oxygen deprived the fluid is. The pH range is from 0 to 14, with 7.0 being neutral.
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Acids, Bases, & the pH Scale To be more precise, pH is the negative logarithm of the hydrogen ion concentration: pH = −log [H+]. The square brackets around the H + automatically mean concentration to a chemist. What the equation means is just what we said before: for each 1-unit change in pH, the hydrogen ion concentration changes ten-fold. Pure water has a neutral pH of 7. pH values lower than 7 are acidic, and pH values higher than 7 are alkaline (basic).
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Acids, Bases, & the pH Scale To be more precise, pH is the negative logarithm of the hydrogen ion concentration: pH = −log [H+] The square brackets around the H+ automatically mean concentration to a chemist. What the equation means is just what we said before: for each 1-unit change in pH, the hydrogen ion concentration changes ten-fold. Pure water has a neutral pH of 7. pH values lower than 7 are acidic, and pH values higher than 7 are alkaline (basic).
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Chemistry: The pH Scale Scientists have come up with the pH scale for determining the concentration of acid in a solution so we can distinguish between solutions with varying acidity. The pH of a solution can be determined using the following equation: 1  pH = -log[H + ].
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What is Acid in Chemistry? - Definition & Overview The pH scale is a scale that is used to represent the level of acidity in a solution. A solution with a pH of 7 is neutral, while a solution with a pH below 7 is an acid, and a solution with a pH above 7 is a base. An acid dissociates, or breaks apart, and donates protons, or hydrogen ions, in an aqueous solution, while a base donates hydroxide ions in a solution. Water, for example, is neutral with a pH of 7. When acids are added, they release more hydrogen ions into the solution, and this causes the pH of the solution to drop.
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Acids, Bases, & the pH Scale To be more precise, pH is the negative logarithm of the hydrogen ion concentration: pH = −log [H+]. The square brackets around the H + automatically mean concentration to a chemist. What the equation means is just what we said before: for each 1-unit change in pH, the hydrogen ion concentration changes ten-fold.
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What does pH have to do with hydrogen ions? Best Answer: pH is a measure of the concentration of hydrogen ions in solution -- i.e. - the acidity of the solution. The lower the value of pH, the more acidic the solution is. pH is calculated in the following manner: pH = -log [H+] (the log is base 10)
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pH pH. The pH of a solution is a measure of the molar concentration of hydrogen ions in the solution and as such is a measure of the acidity or basicity of the solution. The letters pH stand for power of hydrogen and the numerical value is defined as the negative base 10 logarithm of the molar concentration of hydrogen ions.
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PHValues of Water Completely Explained Remember the time in 4th grade science class when you did that experiment with litmus paper and it turned red when you put it on a lemon and blue in soapy water? That was probably your first experiment into the wondrous science of pH. The indicator for acidity, alkalinity, or basic is known as the pH value. A pH value of 7 means a substance is neutral. The lower value indicates acidity, and a higher value is a sign of alkalinity. In addition, many of the foods we eat contain an acidic pH because of their bacteria killing functions.
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Acid-Base Titrations pH. Symbol for the negative logarithm of the H + ion concentration (measured in moles per liter); a solution with pH 7.00 is neutral at 22°C, one with a pH of more than 7.0 is alkaline, and one with a pH lower than 7.00 is acid. At a temperature of 37°C, neutrality is at a pH value of 6.8.
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- A pH of 7.0 means that a solution is neutral, having a medium concentration of hydrogen ions. Solutions such as distilled water have a neutral pH and thus a concentration of 1 x 10-7 mol/L of hydrogen ions in solution. Neutral solutions have pH values of 7.0 (or very close to 7.0).
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What does the pH scale measure? The higher the concentration of protons, the lower the pH, and the more acidic the solution is. The lower the concentration of protons, the higher the pH, and the more basic the solution is. The pH scale is a scale of numbers from 1 to 14, with 14 being the most basic and 1 being the most acidic. A pH of 7 is neutral, and is the pH of pure water.
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pH In chemistry, pH (/ p iː ˈ eɪ tʃ /) (potential of hydrogen) is a numeric scale used to specify the acidity or basicity of an aqueous solution. It is approximately the negative of the base 10 logarithm of the molar concentration, measured in units of moles per liter, of hydrogen ions.
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- We define the pH of a solution as the negative logarithm of the hydrogen ion concentration. 1  at pH 7.0, a solution is neutral. 2  at lower pH (1-6), a solution is acidic. 3  at higher pH (8-14), a solution is basic.
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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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The P/H Scale 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.
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The Effect of pH on the Grotwh of Green Beans (Draft 4). The pH is most commonly known as the measure of the acidity or alkalinity of a solution, numerically equal to 7 for neutral solutions, increasing with increasing alkalinity and decreasing with increasing acidity. The pH scale ranges from 0 to 14, most acidic to most basic [15]. In chemical terms, the pH scale refers to the concentration of hydrogen ions in a substance, and each whole unit represents a factor of 10 i.e. pH5 is 10 times more acidic than pH6 [16]. Basically a pH scale measures the concentration of H+ and OH-. The internal pH of most living cells is close to 7.
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- In chemistry, pH is defined as the negative logarithm of the hydrogen-ion activity. More simply, it is. a measure of the relative amount of free hydrogen (H+) and hydroxyl ions (OH-). That is, it tells the. degree to which something—such as soil, water, or any solution—is basic or acidic. pH is reported.
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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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- Typically, the hydrogen ion concentration of a solution is expressed in terms of pH. pH is calculated as the negative log of a solution’s hydrogen ion concentration: pH =−log10\text{pH =} -log_{10}pH =−log​10​​[H\text{[H}[Hopen bracket, H+^+​+​​start superscript, plus, end superscript]\text]]close bracket.
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What does pH in water mean? pH basically tells you of the concentration of hydronium ions in water. Basically pH is the negative exponent of the concentration in water. For example pure water has pH of 7. Some water molecules (H2O become hydroxide OH-and hydronium H3O+) ions. pure water has 10^-7 moles of hydronium ions per liter of water.
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pH Solutions with a pH less than 7 are acidic and solutions with a pH greater than 7 are basic. Pure water is neutral, at pH 7 (25 °C), 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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- In the middle, neutral pH 7 is indicated by green. Universal indicator shows how acidic or alkaline a solution is. These are the important points about the pH scale: 1  neutral solutions are pH 7 exactly. 2  acidic solutions have pH values less than 7. 3  alkaline solutions have pH values more than 7.