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【简答题】
若原电池：(-)Ni∣Ni2+(xmol×L-1)‖Sn2+(0.0010 mol×L-1)∣Sn(+) 的电动势E=0.00 V，已知jӨ(Ni2+/Ni)=-0.257V，jӨ(Sn2+/Sn)= -0.137V，则该原电池的标准电动势Eϴ=_________V，所发生的氧化还原反应为_____，DrGmϴ(298.15K) =___，Kϴ(298.15 K)=___。Ni2+离子浓度x =_______。
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【简答题】请结合所学内容,尝试练习该节奏。
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