下列电池中电动势E最大的是
A: Pt | H2 (2 pø) | H+ (a = 1) || H+ (a = 1) | H2 (pø) | Pt
B: Pt | H2 (pø) | H+ (a = 1) || H+ (a = 0.5) | H2 (pø) | Pt
C: Pt | H2 (pø) | H+ (a = 1) || H+ (a = 1) | H2 (pø) | Pt
D: Pt | H2 (2 pø) | H+ (a = 1) || H+ (a = 0.5) | H2 (pø) | Pt
A: Pt | H2 (2 pø) | H+ (a = 1) || H+ (a = 1) | H2 (pø) | Pt
B: Pt | H2 (pø) | H+ (a = 1) || H+ (a = 0.5) | H2 (pø) | Pt
C: Pt | H2 (pø) | H+ (a = 1) || H+ (a = 1) | H2 (pø) | Pt
D: Pt | H2 (2 pø) | H+ (a = 1) || H+ (a = 0.5) | H2 (pø) | Pt
举一反三
- 将反应H2(pθ)+1/2O2(pθ)= H2O(l) 设计成电池,下列正确的是( ) A: Pt | H2(pθ)| H+(α)| O2(pθ)| Pt B: Pt | O2(pθ)| OH-(α)| H2(pθ)| Pt C: Pt | O2(pθ)| OH -(α1)|| H+(α2)| H2 (pθ)| Pt D: Pt | H2(pθ)| H+(α1)|| OH -(α2)| O2(pθ)| Pt
- 下列四个原电池中,其电池反应不为 H2(2pθ)→H2(pθ) 的电池是: A: Pt,H2(2pθ)|H+(a= 0.1)||H+(a= 0.2)|H2(pθ),Pt B: Pt,H2(2pθ)|H+(a= 10-8)|H2(pθ),Pt C: Pt,H2(2pθ)|H+(a= 0.1)|H2(pθ),Pt D: Pt,H2(2pθ)|H+(a = 0.1)||KCl(m = 1)|Hg2Cl2(s),Hg-Hg,Hg2Cl2(s)|KCl(m = 1)|H+(a = 0.1)|H2(pθ),Pt
- 标准氢电极是指:()。 A: Pt|H2(p(H2)=100kPa)|OH-(a=1) B: Pt|H2(p(H2)=100kPa)|H+(a=10-7) C: Pt|H2(p(H2)=100kPa)|H+(a=1)
- 【4.4】标准氢电极是 。 A: Pt,H2 ( pθ)│OH (a OH = 1) B: Pt,H2 ( pθ)│OH (aOH =10-7) C: Pt,H2 ( pθ)│H+( aH +=10-7) D: Pt,H2 ( pθ)│H+(aH += 1)
- 标准氢电极是指: A: Pt(s)∣H2[p = 100kPa]∣OH-(a=1) B: Pt(s)∣H2[p = 101.325kPa]∣OH-(a=1) C: Pt(s)∣H2[p = 100kPa]∣H+ (a=1) D: Pt(s)∣H2[p = 101.325kPa]∣H+(a=1)