→ JL12:凡自發過程必不可逆，故G<0 07/16 23:50
※ 引述《sugarlesss (girl)》之銘言：
: 考完剛到家! 來問幾題一直耿耿於懷的問題><
: 1. Three flasks, 1.0L , STP, A裝:He B: O2 C: H2
: How many of the flasks at STP are less dense than air at STP ?
: 2. The majority of shell electron transition in molecules occur in the _____
: region of the electromagnetic spectrum
: A) IR B) X rays C) UV D) microwave
: 3. 電池 Cu^2+ + 2Ag → 2Ag^+ + Cu
: 請問分別加 Ag^+ 或 Cu^2+ 會影響 cell potential 嗎?
: 4. An ideal gas expands to the vacuum isothermally and irreveribly
: W is A) <0 B) >0 C) =0 D) more imformation is needed
: △U is A) <0 B) >0 C) =0 D) more imformation is needed
: △G is A) <0 B) >0 C) =0 D) more imformation is needed
: △Ssys is A) <0 B) >0 C) =0 D) more imformation is needed
恆溫不可逆膨脹
恆溫內能=0
而不可逆
G大於0(這裡沒註明是不是系統的自由能，有爭議)
Ssys>0
膨脹做負功
所以W<0
以上
: 以上，請求板大解惑!
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