問題詳情
7. Which of the following is the 1st law of thermodynamics?
(A) The entropy of the a system undergoing a spontaneous process must decrease.
(B) The heat of an open system must remain constant throughout the entirety of theprocess.
(C) A process’s change in Gibbs free energy can determine the process’s spontaneity.
(D) The change in a system’s internal energy is equal to the sum of heat added into thesystem and the work done by the system.
參考答案
答案：D
難度：計算中-1
書單：沒有書單，新增
用户評論
【用戶】佐伯貴理華
【年級】
【評論內容】能量守恆定律對非孤立系統的擴展。此時能量可以以功W或熱量Q的形式傳入或傳出系統。即：式中為系統內能的變化量，若系統對外界作正功，則為正，反之則為負。