【简答题】已知 25 °C 时, E θ (Fe 3+ |
Fe 2+ ) = 0.77 V , E θ (Sn 4+ | Sn 2+ ) =0.15 V 。今有一电池,其电池反应为 2
Fe 3+ + Sn 2+ === Sn 4+ +2 Fe 2+ ,则该电池的标准电动势 E θ (298
K) 为:( ) (5.0分)A. 1.39 V B. 0.62 V C. 0.92 V D. 1.07 V
【简答题】25 °C 时,对电池 Pt |Cl 2 ( p θ ê Cl - ( a =1) || Fe 3+ ( a =1) , Fe 2+ ( a =1) ê Pt : ( 1 )写出电池反应; ( 2 )计算电池反应的 D r G m θ 及 K θ 值; ( 3 )当 Cl - 的活度改变为 a (Cl - ) = 0.1 时, E 值为多少? (已知 E θ (Cl - |Cl 2 |Pt) =1...
【多选题】下列选项中,关于竞价推广营销基本思维说法正确的是?
【多选题】下列选项中,关于竞价推广营销基本思维说法正确的是?
【判断题】总平面设计的成果主要有总平面布置示意图及说明书、总平面设计施工图及说明书。
【单选题】We look forward to ______ to the opening ceremony.
【单选题】______before we leave tomorrow, we should invite all our friends to hold a party to welcome them.
C.
Were they ti5 come back
【单选题】We are happy_______ you to the party for our friends from Beijing.