The gas laws
1 mark · EasyWhich of the following equations relates the pressure and volume of a fixed mass of gas at constant temperature?
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Correct option: p_1 V_1 = p_2 V_2
Common mistakes: Choosing combined gas law instead of Boyle's Law
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Marking points
B1 · 1 mark · Selects correct gas law equation (Boyle's Law)
Worked solution
Boyle's law states that for a fixed mass of gas at constant temperature, pressure × volume is constant, so the equation is