he temperature of a system decreases in an(1 Ponto)Adiabatic expansionisothermal expansionisothermal compressionadiabatic compression
Question
he temperature of a system decreases in an
(1 Ponto)
- Adiabatic expansion
- Isothermal expansion
- Isothermal compression
- Adiabatic compression
Solution
The temperature of a system decreases in an adiabatic expansion.
Here's why:
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An adiabatic process is one in which no heat is gained or lost by the system. The first law of thermodynamics, ΔQ = ΔU + ΔW, can be simplified to ΔU = -ΔW for adiabatic processes since ΔQ = 0.
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In an adiabatic expansion, the system does work on the surroundings and the internal energy decreases.
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According to the ideal gas law, if the internal energy decreases, the temperature also decreases.
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Therefore, in an adiabatic expansion, the temperature of the system decreases.
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