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Analyte
The chemical species being analyzed in the solution.
Aliquot
A measured sub-volume of a sample.
Titrant
A solution of known concentration that is added to a sample during a titration.
Equivalence point
A point at which the amount of titrant added is exactly enough to completely react with the analyte in the solution.
Endpoint
The point at which the indicator changes color, signaling that the titration is complete.
Blanking the instrument
Involves setting the spectrophotometer to zero absorbance using a blank solution.
Beer-Lambert Law
Equation expressed by the equation: A=ecl.
Blank
A sample that contains all the components of the test solution except the analyte.
Y-value
Represents the value on the vertical axis.
Stoichiometry
The branch of chemistry that deals with the quantitative relationships between the reactants and products in a chemical reaction.
Ligand
A molecule or ion that binds to a central metal atom or ion to form a coordination complex.
Coordination complex
Consists of a central metal atom or ion bonded to surrounding molecules or ions called ligands.
Complex ion
A charged species consisting of a central metal ion bonded to one or more molecules or ions called ligands.
Lamda max
The wavelength at which a substance absorbs the maximum amount of light.
Enthalpy of a Reaction
The heat change associated with a chemical reaction.
Calorimeter
An instrument used to measure heat evolved by an exothermic reaction.
Hess's Law
A law that states the total enthalpy change for a reaction is the sum of the enthalpy changes for individual steps.
Titration curve
A plot of pH versus volume of titrant added.
Molarity
The concentration of a solution expressed as moles of solute per liter of solution.
Significant figures
Digits that carry meaningful information about the precision of a measurement.
A=Єbc
Beer-Lambert Law equation
Transmittance
The fraction of light that passes through a sample compared to the incident light.
Absorbance
A measure of the amount of light passing through the sample
Note 
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