Boyle's Law Flashcards

All 5 cards in this deck

What is the equation linking pressure and volume for a fixed mass of gas at constant temperature?

$P_1 \times V_1 = P_2 \times V_2$

Under what conditions can $P_1 \times V_1 = P_2 \times V_2$ be used?

For a fixed mass of gas kept at constant temperature.

How are the pressure and volume of a fixed mass of gas at constant temperature related?

Inversely — doubling the pressure halves the volume.

What are the steps to find a new volume using $P_1 \times V_1 = P_2 \times V_2$?

e.g. 6 litres of gas at 100 kPa is compressed to 300 kPa

1. Substitute: $100 \times 6 = 300 \times V_2$
2. Rearrange: $V_2 = \dfrac{100 \times 6}{300}$
3. Evaluate: $V_2 = 2$ litres

True or false? In $P_1 \times V_1 = P_2 \times V_2$ the volumes must always be converted to $\text{m}^3$.

False. Any volume unit works as long as $V_1$ and $V_2$ are in the same unit (and $P_1$, $P_2$ in the same unit).