已知HCl(g)的△fGΘm(573K)=-98.63kJmol-1,△fGΘm(298K)=-95.25KJmol-1。求反应H2(g)+Cl2(g)=2HCl(g)
已知HCl(g)的△fGΘm(573K)=-98.63kJmol-1,△fGΘm(298K)=-95.25KJmol-1。求反应H2(g)+Cl2(g)=2HCl(g)的△rGΘm和△rSΘm。
已知HCl(g)的△fGΘm(573K)=-98.63kJmol-1,△fGΘm(298K)=-95.25KJmol-1。求反应H2(g)+Cl2(g)=2HCl(g)的△rGΘm和△rSΘm。
A.0.004008
B.0.003646
C.36.46
D.40.08
已知C1·(g)+H2(g)→HCl(g)+H·(g)是一个基元反应,反应物分子的摩尔质量和直径分别为:=35.45g/mol,=2.016g/mol,=0.2nm,=0.15nm。请根据碰撞理论计算该反应的指前因子A(令T=350K)。
已知25℃时:
Delta _fH_m^{ominus }/(kJcdot mol^{-1}) | S_m^{ominus }/(Jcdot mol^{-1}cdot K^{-1}) | |
NH4Cl(s) HCl(g) NH3(g) | -314.4 -92.3 -45.9 | 94.6 186.9 192.8 |
称取纯金属锌0.6539g,溶于HCl后,定量转移并稀释到500mL容量瓶中,定容,摇匀,计算溶液中Zn2+的摩尔浓度。已知M(Zn)=65.39g/mol。
Silver oxide,Ag2O,can decompose into its elements,Ag(S)and O2(g).(a)Write a balanced equation for this decomposition reaction.(b)Calculate theat 298K for the reaction.(c)Suppose Ag2O is decomposed at 298K in a closed container according to the reaction in part(a).What will be the pressure of O2(g)at equilibrium?(d)Suppose Ag2O is decomposed at 573K in a closed container according to the reaction in part(a).What will be the p ressure of O2(g)at equilibrium?
已知反应:2H2(g)+O2(g)=2H2O(g),△fHΘm(H2O,1 298K)=-237.18kdmol-1求该反应的KΘ=___________。
设衰变的相互作用为型,已知mK=497.671MeV/c2,mπ=139.6MeV/c2,=0.8922×10-10s,试估计相互作用常数g的数量级.
已知:C2H5OH(l)+3O2(g)=2CO2(g)+3H2O(l),△rHΘm=-l 922KJmol-1。
24.0g C2H5OH燃烧时放出的热量。