将下列两个反应设计成电池，此两电池的、及K_a的关系为(    )
   ①Fe(s)+2Fe³⁺(a₁)→3Fe²⁺(a₂)
   ②2Fe(s)+4Fe³⁺(a₁)→6Fe²⁺(a₂)
   A．，，
   B．，，
   C．，，
   D．，，

A.174.24.96:6088/Latex/latex.action?latex=RV57XG9taW51cyB9'
B.174.24.96:6088/Latex/latex.action?latex=XERlbHRhIF9yR19tXntcb21pbnVzIH0%3D'
C.D.174.24.96:6088/Latex/latex.action?latex=RV57XG9taW51cyB9KDEpPUVee1xvbWludXMgfSgyKQ%3D%3D'
E.174.24.96:6088/Latex/latex.action?latex=XERlbHRhIF9yR19tXntcb21pbnVzIH0oMSk9XERlbHRhIF9yR19tXntcb21pbnVzIH0oMik%3D'
F.174.24.96:6088/Latex/latex.action?latex=S19hXntcb21pbnVzIH0oMSk9S19hXntcb21pbnVzIH0oMik%3D'
G.H.174.24.96:6088/Latex/latex.action?latex=RV57XG9taW51cyB9KDEpPUVee1xvbWludXMgfSgyKQ%3D%3D'
I.174.24.96:6088/Latex/latex.action?latex=XERlbHRhIF9yR19tXntcb21pbnVzIH0oMik9MlxEZWx0YSBfckdfbV57XG9taW51cyB9KDEp'
J.174.24.96:6088/Latex/latex.action?latex=S19hXntcb21pbnVzIH0oMik9W0tfYV57XG9taW51cyB9KDEpXV4y'
K.L.174.24.96:6088/Latex/latex.action?latex=RV57XG9taW51cyB9KDIpPUVee1xvbWludXMgfSgxKQ%3D%3D'
M.174.24.96:6088/Latex/latex.action?latex=XERlbHRhIF9yR19tXntcb21pbnVzIH0oMik9MlxEZWx0YSBfckdfbV57XG9taW51cyB9KDEp'
N.174.24.96:6088/Latex/latex.action?latex=S19hXntcb21pbnVzIH0oMik9W0tfYV57XG9taW51cyB9KDEpXV4y'
O.P.174.24.96:6088/Latex/latex.action?latex=RV57XG9taW51cyB9KDEpPUVee1xvbWludXMgfSgyKQ%3D%3D'
Q.174.24.96:6088/Latex/latex.action?latex=XERlbHRhIF9yR19tXntcb21pbnVzIH0oMik9MlxEZWx0YSBfckdfbV57XG9taW51cyB9KDEp'
R.174.24.96:6088/Latex/latex.action?latex=S19hXntcb21pbnVzIH0oMSk9S19hXntcb21pbnVzIH0oMik%3D'