For the reaction, A® B +C, K is 0.729 at 20°C. Given that ΔH° = 45.9 kJ/mol, what is K value for this reaction at 377 K? ( )
A: 45.9
B: 191
C: 91.2
D: 66.6
E: 48.5
A: 45.9
B: 191
C: 91.2
D: 66.6
E: 48.5
举一反三
- 某一反应在298 K时，ΔrHmθ = 80 kJ/mol，ΔrGmθ =60 kJ/mol，则该反应的ΔrSmθ等于 ( ) J/(mol·K) A: -67 B: 20 C: 67 D: -20
- The values are assigned as j = k = 3. What will be the value of c = j *= k + 5 ? ________ A: 24 B: 20 C: 11 D: 8
- 298K和标准压力下2 mol双原子理想气体经过绝热可逆过程变到体积增加一倍，则终态温度及该过程的焓变分别为： A: T2= 226 K；ΔH=-2.10 kJ B: T2= 244 K；ΔH=-3.14 kJ C: T2= 226 K；ΔH=-4.19 kJ D: T2= 244 K；ΔH=-1.57 kJ
- 某化学反应若在300 K，100kPa下于试管中恒温恒压进行时放热60 kJ，在相同条件下通过可逆电池恒温恒压进行反应，则吸热6kJ，则该化学反应的焓变DH＝ ，熵变DS＝ A: -60 kJ； 20 J/K B: -60 kJ； 20 J/K C: -60 kJ； -200 J/K D: -6 kJ； 20 J/K E: 6 kJ； -200 J/K F: 6 kJ； 200 J/K
- The half-life formula of the first order reaction is A: t1/2 = 0.1054/k B: t1/2 = 0.693/k C: t1/2 = C0/2k D: t1/2 = 0.693k