7. 已知 DfHmΘ(CH3OH,l,298K)= -238.57kJ/mol,DfHmΘ(CO,g,298K)= -110.525kJ/mol 则反应CO(g)+2H2(g)==CH3OH(l)的DrHmΘ(298K)= 。
举一反三
- 【填空题】已知 ( CH 3 OH, l , 298K ) = -238.57 kJ.mol -1 ( CO, g , 298K ) = -110.525 kJ.mol -1 则反应 CO ( g )+ 2H 2 ( g ) CH 3 OH ( l )的 ( 298K ) = ; ( 298K ) =
- 已知DfHmy(CH3OH,l,298K)= -239 kJ·mol-1,DfHmy(CO,g,298K)= -111 kJ·mol-1,则反应CO(g)+2H2(g)=CH3OH(l)的DrHmy( 298K)等于:
- 【单选题】已知反应: (1) CO(g) + H2O(g) = CO2(g) + H2(g) , (298K) = - 41.2 kJ/mol (2) CH4(g) + 2 H2O(g)= CO2(g) + 4 H2(g), (298K) = 165.0 kJ/mol 则 CH4(g) + H2O(g) = CO(g) + 3 H2(g) 的 (298K) = 。 A. - 206.2 kJ/mol B. 123.8 kJ/mol C. 206.2 kJ/mol D. - 123.8 kJ/mol
- 反应H2(g)+Br2(l)=2HBr(g),DrHmΘ=-72.8 kJ·mol-1,则DfHmΘ(HBr,g,298K)为____
- 已知298K时, ∆fGmӨ(NH3, g) = −16.45 kJ·mol−1, 则反应N2 (g) + 3H2 (g) → 2NH3 (g)在298 K、标准状态下能自发进行。