下列反应中,哪个是表示ΔrHmθ=ΔfHmθAgBr(s)的反应?
A: Ag+(aq) +Br-(aq)=AgBr (s)
B: 2Ag(s) +Br2=2AgBr (s)
C: Ag (s) +1/2Br2( l )=AgBr (s)
D: Ag (s)+1/2Br2(S) =AgBr (s)
A: Ag+(aq) +Br-(aq)=AgBr (s)
B: 2Ag(s) +Br2=2AgBr (s)
C: Ag (s) +1/2Br2( l )=AgBr (s)
D: Ag (s)+1/2Br2(S) =AgBr (s)
举一反三
- 下列反应中哪个是表示ΔH=ΔfHmθ(AgBr , s)的反应( ) A: Ag(aq) + Br(aq) =AgBr(s) B: 2Ag(s) + Br2(g) =2AgBr(s) C: Ag(s) + Br2(l) =1/2 AgBr(s) D: Ag(s) + 1/2 Br2(l) =AgBr(s)
- 下列反应中,哪个是表示ΔrHmθ=ΔfHmθAgBr(s)的反应? A: Ag+(aq) +Br-(aq)=AgBr (s) B: 2Ag(s) +Br2=2AgBr (s) C: Ag (s) +1/2Br2( l )=AgBr (s) D: Ag (s)+1/2Br2(S) =AgBr (s)
- 下列反应中,哪个是表示ΔrHmθ=ΔfHmθAgBr(s)的反应? A: Ag+(aq) +Br-(aq)=AgBr (s) B: 2Ag(s) +Br2=2AgBr (s) C: Ag (s) +1/2Br2( l )=AgBr (s) D: Ag (s)+1/2Br2(S) =AgBr (s)
- 下列方程式中,能正确表示AgBr(s)的△fHm⊖的是 A: Ag(s)+1/2Br 2 (g)→ AgBr(s) B: Ag(s)+1/2Br 2 (l)→AgBr(s) C: 2Ag(s)+Br 2 (l)→ 2AgBr(s) D: Ag + (aq)+Br-(aq)→ AgBr(s)
- 在下列反应中，焓变等于AgBr(s)的ΔfHmΘ的反应是 A: Ag＋(aq)＋Br－(aq)＝AgBr(s) B: 2 Ag(s)＋Br2(g)＝2 AgBr(s) C: Ag(s)＋1/2 Br2(l)＝AgBr(s) D: Ag(s)＋1/2 Br2(g)＝AgBr(s)