Pressure remaining constant, at which temperature volume of gas will become twice the volume at 0oC?
Correct answer: C. 546 K
- A. 546 oC
- B. 200 oC
- C. 546 K
- D. 273 K
Explanation
According to the general gas equation (PV=nRT), the volume of a gas is directly proportional to its temperature. If you want the volume to be twice then the temperature should also be raised by a factor of x2. Since the initial temperature is 273 K (0 oC), doubling that would give us 546 K.
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About Charles's Law
At constant pressure, the volume of a fixed mass of gas is directly proportional to its absolute temperature. Questions involve the Kelvin scale, the equation V₁/T₁ = V₂/T₂, volume-temperature graphs, and the need to distinguish Charles's law from Boyle's law, which relates pressure and volume.
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