If a gas occupies 2.0 L at 0.0 °C, what is the volume at 273 °C if the pressure does not change?
By Charles' law, at constant pressure
Volume of a gas (V) is directly proportional to absolute temperature (T).
Or, =
Given, V_{1} = 2.0 L
T_{1} = (0.0+273.15 ) K = 273.15 K.
T_{2} = (273+273.15) K = 546.15 K.
Then, V_{2} = _{ }
Or, V_{2} = (2.0 × 546.15/273.15) L
= 4.0 L ( 2 significant figures).
So, volume at 273^{0}c is 4.0 L.
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