問題詳情
⑵ 將 nA 莫耳的理想 A 氣體，（其體積 V 而分壓為 PA）與 nB 莫耳的理想 B 氣體（其體積 V 而分壓為 PB），在定溫下混合，形成（nA＋nB）莫耳的 A+B 混合物，（其壓力為 PA＋PB，但體積仍為 V），試問混合熵 Δ Smix =？（5 分）
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