[問題] 熱力學(是非題)

[mimicJ (不愉快です)]

題目要問true or False

 (1)For every reversible process in a closed system;ΔS=ΔH/T

ans:True

我的問題:ΔS=ΔH/T 這個公式不是只能用在可逆相變化，答案應該是false

 (2)Q=0 for every isothermal process in a closed system.

ans:True

我的問題:Q=0不是應該是adiabatic  process，為什麼題目說isothermal

 (3)In every cyclic process, the final and initial states of the system

are the same and the initial and final states of the surroundings are the same.

ans:False

這題不太懂為什麼是false


謝謝大家



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◆ From: 114.45.61.57
※ 編輯: mimicJ          來自: 114.45.61.57         (01/10 17:17)
推 guitarspirit:(1)For an ideal gas undergoes
→ guitarspirit:an isentroic process from
→ guitarspirit:T1 to T2  in a closed system
→ guitarspirit:→ ΔS=0 ΔH≠0
→ guitarspirit:→ ΔS≠ΔH/T → False
→ guitarspirit:(3)In every irreversible process
→ guitarspirit:ΔS(total)=ΔS(sys.)+ΔS(surr.)≧0
→ guitarspirit:ΔS(system)=0 → ΔS(surr.)≧0
→ guitarspirit:→ΔSf(surr.)≠ΔSi(surr.)→False