Distinguish between isothermal process and adiabatic process.
|No||Isothermal process||Adiabatic process|
|1||The temperature of system remains
constant (ΔT = 0).
|The temperature of system changes i.e.
increases or decreases (ΔT ≠0).
|2||System can exchange heat with the surroundings (q ≠ 0).||System cannot exchange heat with the surroundings (q = 0).|
|3||The internal energy of the system
remains constant (ΔU = 0).
|The internal energy of the system changes
(ΔU ≠ 0).
|4||System is not thermally isolated from its surroundings. Hence, open or closed system is required.||System is thermally isolated from its surroundings. Hence, isolated system is required.|
|5||In this ΔU = 0, hence q = -W.||In this q = 0, hence ΔU = W.|
|6||Enthalpy remains constant (ΔH = 0).||Enthalpy changes in this process (ΔH ≠ 0).|
|7||Expansion takes place by absorbing
heat from surroundings
|Expansion takes place by utilizing internal energy of the system|
|8||Heat supplied is used only for doing
|Work done is only at the cost of internal energy.|
|9||Compression takes place by losing heat to the surroundings.||Compression takes place by adding heat
into internal energy of the system.
|10||Fusion of ice.||Expansion of gas in vacuum.|
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- Chemical Thermodynamics and Energetic - Concepts of System
Solution Distinguish Between Isothermal Process and Adiabatic Process. Concept: Chemical Thermodynamics and Energetic - Concepts of System.