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pOH is the expression used to represent the concentration of OH- ions. It is calculated as the negative logarithm of the hydroxide ion concentration in a solution.

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What is micromolar?

Micromolar (uM) is a unit of concentration commonly used in chemistry and biology to represent a concentration of a substance that is equal to one millionth of a mole per liter of solution. It is often used to describe the concentration of ions or molecules in a solution.


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Precipitation titration is used to determine the concentration of ions in a solution by forming a solid precipitate. It is commonly used for determining the concentration of halides, sulfides, and other ions that can form insoluble salts.


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The -log in the pH formula represents the negative logarithm base 10 of the concentration of hydrogen ions in a solution. It is used to convert the concentration of hydrogen ions into a more manageable scale for measuring acidity or basicity.


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"pH" is a convention used as a convenience. It indicates how acidic (or basic, that is, alkaline) a solution is. It is the negative logarithm of the hydrogen ion concentration, usually the latter is expressed in moles (or millimoles) per liter. Moles per liter is, of course, what we call "molarity." pOH is used in the same way, indicating the concentration of hydroxyl ions. Generally, Concentration of hydrogen ions + the concentration of hydroxyl ions = 10-14 A neutral solution has equal numbers of H+ and OH-


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What is the measurement system called that indicate the concentration of H ions in solution?

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The small number used to represent the number of ions of a given element in a chemical formula?

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If x is used to represent the unknown number, then the expression for 20 times a number would be 20x.


How many hydrogen ions in a solution with a pH of 4.0?

The prefix p is used to represent -log in chemistry. In the case of pH, it is used to represent the -log(concentration of H+ ions in M (mol/L)). So, now simple algebra tells us that this solution has .0001 M concentration of hydrogen ions.