The lungs expand when we breathe in, resulting an increase in the volume and a decrease in pressure. When we breathe out, the lungs shrink, resulting from a decrease in the volume and an increased pressure. Which of the gas laws is applicable to the above process?

Charles's Law

Avogadro's Law

Guy Lussac's Law

Boyle's Law

Boyle's Law

The gas law that is applicable to the process described is Boyle's Law. Boyle's Law states that the pressure of a gas is inversely proportional to its volume when temperature is constant. When we breathe in, the volume of the lungs increases, causing a decrease in the pressure. When we breathe out, the volume of the lungs decreases, resulting in an increased pressure.