【简答题】已知反应: Zn + 2 Ag + → Zn 2+ + 2 Ag (1) 开始时 Ag + 和 Zn 2+ 浓度分别为 0.10 mol· L – 1 和 0.30 mol· L – 1 ,求 E( Ag + / Ag ) 、 E( Zn 2+ / Zn ) 及 E 值 ; (2) 计算反应的 K θ 、 E θ 、 ∆ r G m θ 的值; (3) 求达平衡时溶液中剩余的 Ag + 浓度。 已...
【单选题】将反应 Zn +Ag + → Zn 2+ +Ag 设计成原电池,其电池符 号为 ( )
A.
(-)Pt │ Zn │ Zn 2+ ║ Ag + │ Ag(+)
B.
(-)Pt │ Ag │ Ag + ║ Zn 2+ │ Zn │ Pt (+)
C.
(-)Pt │ Zn │ Zn 2+ ║ Ag + │ Ag(+) │ Pt
D.
(-)Ag │ Ag + ║ Zn 2+ │ Zn (+)
E.
(-) Zn │ Zn 2+ ║ Ag + │ Ag(+)
【判断题】Eastern Europeans are significantly more likely to use bluffing in negotiations than Americans.
【单选题】Zn + 2Ag + → Zn 2+ + 2Ag反应构成原电池,欲使其电动势减小,可采取的措施有( )。
【单选题】听力原文:M: Where did you and Tom go on vacation? W: We spend three days in Scotland, one week in Spain, and five days in Switzerland. Q: Which of the following countries was not mentioned? (2)
【单选题】—Dad, I'd like to buy a toy car. Do you have any money in your pocket? —I'm sorry, I have ______. How about buying one next time? [ ]