• 2022-06-25
    在298K时,下列反应的△r H mθ 等于AgBr(s) △fHmθ 的为:()
    A: Ag +(aq) + Br- (aq) = AgBr (s)
    B: 2Ag(s) + Br2(l) = 2 AgBr (s)
    C: Ag(s) + ½ Br2(g) = AgBr (s)
    D: Ag(s) + ½ Br2(l) = AgBr (s)
  • D

    内容

    • 0

      下列反应中哪个是表示ΔrHmӨ = ΔfHmӨ(AgBr, s)的反应 A: 2Ag(s) + Br2(g) =2AgBr(s) B: Ag(s) + 1/2Br2(l) = AgBr(s) C: Ag(s) +1/2Br2(g) = AgBr(s) D: Ag(aq) + Br(aq) =AgBr(s)

    • 1

      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)

    • 2

      在下列反应中,焓变等于AgBr(s)的的反应是: A: Ag+(aq)+Br-(aq)=AgBr(s) B: 2Ag(s)+Br2(g)=2AgBr(s) C: Ag(s)+Br2(l)=AgBr(s) D: Ag(s)+Br2(g)=AgBr(s)

    • 3

      在下列反应中,焓变等于AgBr(s) 的∆fHmq的反应是( ) A: Ag+(aq) + Br-(aq) = AgBr(s) B: 2Ag(s) + Br2(g) = 2AgBr(s) C: Ag(s) +½Br2(l) = AgBr(s) D: Ag(s) +½Br2(g) = AgBr(s)

    • 4

      下列反应中哪个是表示△H=△H(AgBr,s)的反应() A: Ag(aq)+Br(aq)AgBr(s) B: 2Ag(s)+Br(g)2AgBr(s) C: Ag(s)+Br(l)AgBr(s) D: Ag(s)+Br(g)AgBr(s)