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The pH Scale definitions
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pH Scale
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pH Scale
A numerical range, typically 0 to 14, used to express hydrogen ion concentration in a solution for easier comparison.
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Terms in this set (15)
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pH Scale
A numerical range, typically 0 to 14, used to express hydrogen ion concentration in a solution for easier comparison.
pOH Scale
A numerical range, typically 0 to 14, used to express hydroxide ion concentration in a solution for easier comparison.
Hydrogen Ion
A positively charged particle whose concentration determines acidity; often represented as H+ or H3O+.
Hydroxide Ion
A negatively charged particle whose concentration determines basicity; represented as OH-.
Molarity
A measure of concentration defined as moles of solute per liter of solution, often used for acids and bases.
Acidic Solution
A mixture where hydrogen ion concentration exceeds hydroxide ion concentration, resulting in a pH less than 7.
Basic Solution
A mixture where hydroxide ion concentration exceeds hydrogen ion concentration, resulting in a pH greater than 7.
Neutral Solution
A mixture where hydrogen ion and hydroxide ion concentrations are equal, typically with a pH of 7 at 25°C.
Water Ion Product
A constant (Kw) equal to 1.0 x 10^-14 at 25°C, representing the product of hydrogen and hydroxide ion concentrations in water.
Negative Logarithm
A mathematical operation used to convert small ion concentrations into manageable pH or pOH values.
Strontium Hydroxide
A compound that, when dissolved, releases two hydroxide ions per formula unit, affecting solution basicity.
Concentration
The amount of a substance present in a given volume, often expressed in molarity for solutions.
Strong Acid
A substance that completely dissociates in water, resulting in high hydrogen ion concentration and low pH.
Strong Base
A substance that completely dissociates in water, resulting in high hydroxide ion concentration and high pH.
Unit Conversion
A process of changing measurements, such as milliliters to liters, to ensure consistency in calculations.