Gases: Gay-Lussac's Law Flashcards

Vocabulary flashcards covering the principles of Gay-Lussac's Law, vapor pressure, boiling point, and gas behavior based on lecture notes.

Joseph Louis Gay-Lussac

French chemist and physicist who pioneered investigations into the behaviour of gases, established new techniques for analysis, and made notable advances in applied chemistry.

Gay-Lussac’s Law

A law stating that the pressure exerted by a gas is directly related to the Kelvin temperature when volume and amount are constant.

Constants in Gay-Lussac’s Law

Volume ($V$) and amount of gas ($n$).

Gay-Lussac’s Law Equation

$$\frac{P_1}{T_1} = \frac{P_2}{T_2}$$

Pressure and Temperature Relationship

When the Kelvin temperature of a gas doubles at constant volume and amount of gas, the pressure also doubles.

Vapor

Formed when liquid molecules with sufficient kinetic energy break away from the surface of a liquid.

Vapor Pressure

The pressure created in a closed container when vapor accumulates after liquid molecules evaporate.

Boiling Point

The temperature at which the vapor pressure of a liquid becomes equal to the external pressure.

Celsius to Kelvin Conversion

Temperature in Kelvin is calculated by adding $273$ to the temperature in Celsius ($^{\circ}C + 273 = K$).

P2 Calculation Formula

An algebraic rearrangement of Gay-Lussac’s Law to solve for final pressure: $P_2 = \frac{P_1 \times T_2}{T_1}$