在绝热钢瓶中发生如下放热反应:H2(g)+Cl2(g)=2HCl(g),则() A: Q=0W=0ΔU=0ΔH=0 B: Q=0W=0ΔU=0ΔH>0 C: Q=0W=0ΔU>0ΔH>0 D: Q>0W=0ΔU>0ΔH>0
在绝热钢瓶中发生如下放热反应:H2(g)+Cl2(g)=2HCl(g),则() A: Q=0W=0ΔU=0ΔH=0 B: Q=0W=0ΔU=0ΔH>0 C: Q=0W=0ΔU>0ΔH>0 D: Q>0W=0ΔU>0ΔH>0
已知在 298K 时 (1)2A 2(g) +B 2(g) =2A 2 B (g) , K 1 q = 138 (2) A 2(g) +2B 2(g) = 2AB 2 (g) , K 2 q = 44 求 (3) 2A 2 B (g) + 3B 2(g) = 4AB 2 (g) 的 K q 。
已知在 298K 时 (1)2A 2(g) +B 2(g) =2A 2 B (g) , K 1 q = 138 (2) A 2(g) +2B 2(g) = 2AB 2 (g) , K 2 q = 44 求 (3) 2A 2 B (g) + 3B 2(g) = 4AB 2 (g) 的 K q 。
If the system goes through a series of changes and finally returns to the initial state, which option is correct about the change of the thermodynamic functions of the system? ( ) A: Q=0, W=0, ΔU=0, ΔH=0 B: Q=0, W=0, ΔU=0, ΔG=0 C: ΔU=0, ΔH=0, ΔG=0, ΔS=0 D: Q=W, W=0, ΔU=0, ΔH=0
If the system goes through a series of changes and finally returns to the initial state, which option is correct about the change of the thermodynamic functions of the system? ( ) A: Q=0, W=0, ΔU=0, ΔH=0 B: Q=0, W=0, ΔU=0, ΔG=0 C: ΔU=0, ΔH=0, ΔG=0, ΔS=0 D: Q=W, W=0, ΔU=0, ΔH=0
一定量的某理想气体,节流膨胀过程中△U、△S、△G的值是() A: △U=0, △S=0, △G=0 B: △U=0, △S>0, △G=0 C: △U=0, △S>0, △G<0 D: △U>0, △S>0, △G=0
一定量的某理想气体,节流膨胀过程中△U、△S、△G的值是() A: △U=0, △S=0, △G=0 B: △U=0, △S>0, △G=0 C: △U=0, △S>0, △G<0 D: △U>0, △S>0, △G=0
理想气体节流膨胀后,则:() A: ΔU=0,ΔS=0,ΔG=0 B: ΔU<0,ΔS<0,ΔG<0 C: ΔU>0,ΔS>0,ΔG>0 D: ΔU=0,ΔS>0,ΔG<0
理想气体节流膨胀后,则:() A: ΔU=0,ΔS=0,ΔG=0 B: ΔU<0,ΔS<0,ΔG<0 C: ΔU>0,ΔS>0,ΔG>0 D: ΔU=0,ΔS>0,ΔG<0
如果系统经过一系列的变化,最后回到起始状态,则系统的? Q = W,ΔU = Q,Δ W=0,ΔH = 0|ΔU = 0,ΔH = 0,ΔG = 0,ΔS = 0;;|Q = 0,W= 0,ΔU = 0,ΔH = Q|Q = 0,W = 0,ΔU = 0,ΔH = 0
如果系统经过一系列的变化,最后回到起始状态,则系统的? Q = W,ΔU = Q,Δ W=0,ΔH = 0|ΔU = 0,ΔH = 0,ΔG = 0,ΔS = 0;;|Q = 0,W= 0,ΔU = 0,ΔH = Q|Q = 0,W = 0,ΔU = 0,ΔH = 0
已知373.15K下H2O(l)的标准摩尔汽化焓为40.67kJ/mol。2molH2O(l,373.15K,100kPa)在定温定压下汽化为H2O(g,373.15K,100kPa)时,过程的Q,W,ΔU,ΔH,ΔS,ΔG为() A: Q=81.34kJ,W=-81.34kJ,ΔU=0J,ΔH=0J,ΔS=218J·K-1, ΔG=0 J B: Q=40.67kJ,W=-3.10kJ,ΔU=37.57,ΔH=40.67kJ,ΔS=109J·K-1, ΔG=0 J C: Q=40.67kJ,W=-40.67kJ,ΔU=0 J,ΔH=0 J,ΔS=109J·K-1, ΔG=0 J D: Q=81.34kJ,W=-6.20kJ,ΔU=75.14kJ,ΔH=81.34kJ,ΔS=218J·K-1, ΔG=0 J
已知373.15K下H2O(l)的标准摩尔汽化焓为40.67kJ/mol。2molH2O(l,373.15K,100kPa)在定温定压下汽化为H2O(g,373.15K,100kPa)时,过程的Q,W,ΔU,ΔH,ΔS,ΔG为() A: Q=81.34kJ,W=-81.34kJ,ΔU=0J,ΔH=0J,ΔS=218J·K-1, ΔG=0 J B: Q=40.67kJ,W=-3.10kJ,ΔU=37.57,ΔH=40.67kJ,ΔS=109J·K-1, ΔG=0 J C: Q=40.67kJ,W=-40.67kJ,ΔU=0 J,ΔH=0 J,ΔS=109J·K-1, ΔG=0 J D: Q=81.34kJ,W=-6.20kJ,ΔU=75.14kJ,ΔH=81.34kJ,ΔS=218J·K-1, ΔG=0 J
2 mol H2和 2 mol Cl2在绝热钢瓶内反应生成 HCl 气体,起始时为常温常压。以钢瓶内为系统,则: A: ΔU = 0,ΔH = 0,ΔS > 0,ΔG < 0 B: ΔU < 0,ΔH < 0,ΔS > 0,ΔG < 0 C: ΔU = 0,ΔH > 0,ΔS > 0,ΔG < 0 D: ΔU > 0,ΔH > 0,ΔS = 0,ΔG > 0
2 mol H2和 2 mol Cl2在绝热钢瓶内反应生成 HCl 气体,起始时为常温常压。以钢瓶内为系统,则: A: ΔU = 0,ΔH = 0,ΔS > 0,ΔG < 0 B: ΔU < 0,ΔH < 0,ΔS > 0,ΔG < 0 C: ΔU = 0,ΔH > 0,ΔS > 0,ΔG < 0 D: ΔU > 0,ΔH > 0,ΔS = 0,ΔG > 0
【多选题】实际气体绝热节流膨胀过程中,Q,W, ΔU , Δ S, ΔH, ΔG, ΔA,这些热力学函数的变量哪些为0?哪些绝对值相等? A. Q= ΔH=0 B. W= ΔU , C. ΔG= ΔA D. Δ S=0
【多选题】实际气体绝热节流膨胀过程中,Q,W, ΔU , Δ S, ΔH, ΔG, ΔA,这些热力学函数的变量哪些为0?哪些绝对值相等? A. Q= ΔH=0 B. W= ΔU , C. ΔG= ΔA D. Δ S=0
如果系统经过一系列的变化,最后回到起始状态,则系统的 A: Q = 0,W = 0,ΔU = 0,ΔH = 0 B: Q = 0,W= 0,ΔU = 0,ΔH = Q C: ΔU = 0,ΔH = 0,ΔG = 0,ΔS = 0 D: Q = W,ΔU = Q,Δ W=0,ΔH = 0
如果系统经过一系列的变化,最后回到起始状态,则系统的 A: Q = 0,W = 0,ΔU = 0,ΔH = 0 B: Q = 0,W= 0,ΔU = 0,ΔH = Q C: ΔU = 0,ΔH = 0,ΔG = 0,ΔS = 0 D: Q = W,ΔU = Q,Δ W=0,ΔH = 0