Part 2: Air bubble in liquid a) State the reason why the volume increases as the bubble rises in the liquid column. b) From the graph, determine the pressure on the bubble.

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Part 2: Air bubble in liquid

• a) State the reason why the volume increases as the bubble rises in the liquid column. As the air bubble rises, the depth of the liquid above it decreases. This causes the hydrostatic pressure exerted by the liquid column on the bubble to decrease. According to Boyle's Law, for a fixed mass of gas at constant temperature, pressure is inversely proportional to volume ($P \propto 1/V$). Therefore, as the pressure decreases, the volume of the bubble increases.

• b) From the graph, determine the pressure on the bubble. The graph shows a linear relationship between pressure ($P$) and the inverse of volume ($1