How to Remember the Gas Laws

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1. Boyle’s Law

Boyle’s law shows that, at constant temperature, the product of an ideal gas’s pressure and volume is always constant. It can be determined experimentally using a pressure gauge and a variable volume container. 

As a mathematical equation, Boyle’s law is:

P_1 V_1=P_2 V_2\,

2. Charles’s Law

It says that, for an ideal gas at constant pressure, the volume is directly proportional to the absolute temperature (in kelvin). 

 \frac{V_1}{T_1}=\frac{V_2}{T_2} \,

3. Pressure Law

It states that the pressure exerted on a container’s sides by an ideal gas is proportional to the absolute temperature.

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

So how to remember the gas law at above?

Just using the general gas law.

The formula:

BoT: In Boyle’s law (Bo), the temperature (T) is always constant.

By using general gas law, JUST remove the T (temperature). So, the formula will be:

P_1 V_1=P_2 V_2\,

CaP: In Charles’s law (Ca), the pressure (P) is always constant.

By using general gas law, JUST remove the P (pressure). So, the formula will be:

 \frac{V_1}{T_1}=\frac{V_2}{T_2} \,

PaV: In Pressure law (Pa), the volume (V) is always constant.

By using general gas law, JUST remove the V (volume). So, the formula will be:

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

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