Which gas law states that the volume of a gas is inversely proportional to its pressure at a constant temperature?

The statement that identifies the volume of a gas as being inversely proportional to its pressure at a constant temperature is known as Boyle's Law. According to this law, when the temperature of a gas is held constant, increasing the pressure on the gas results in a decrease in its volume, and conversely, decreasing the pressure results in an increase in its volume. The mathematical representation of Boyle's Law is expressed as ( P \cdot V = k ), where ( P ) is the pressure, ( V ) is the volume, and ( k ) is a constant for a given amount of gas. This relationship highlights the inverse nature; as one quantity increases, the other decreases while the temperature remains unchanged.

Understanding this principle is fundamental in various scientific and practical applications, such as in understanding how syringe operations or internal combustion engines work. In contrast, other gas laws like Charles's Law deal with volume and temperature directly, Avogadro's Law relates volume and the number of moles of gas, and Dalton's Law focuses on the partial pressures of gases in a mixture, making them unsuitable for this specific relationship between volume and pressure.