Definition: The Beer-Lambert law is expressed as A = ε × l × C, where A is absorbance, ε is molar absorptivity, l is path length, and C is concentration.

Highlight: For dilute solutions, there is a linear relationship between absorbance and concentration, making spectrophotometry an effective analytical technique.

Example: Maximum absorbance coordinates (λmax) are used to identify specific compounds by comparing them with reference spectra.

Vocabulary: Absorbance (A) is a dimensionless quantity measuring the amount of light absorbed by a sample.

Definition: The perfect gas law is expressed as PV = nRT, where P is pressure, V is volume, n is number of moles, R is the gas constant $8.314 J/K·mol$, and T is temperature in Kelvin.

Vocabulary: Conductimetry refers to the study of ionic solutions' ability to conduct electrical current.

Example: In conductivity measurements, the relationship between conductance (G) and resistance (R) is expressed as G = 1/R.

Highlight: Kohlrausch's law states that for dilute solutions, the conductivity is directly proportional to the concentration of the ionic species.