将Zn (s) + 2Ag+ (aq) == Zn2+ (aq) + 2Ag (s) 构成原电池,欲使电动势增大,可在半电池中加入( )
Ag
B. Zn
C. AgNO3
D. ZnCl2
查看答案
在25℃时, 电池(-)Fe|Fe2+‖Pb2+|Pb(+)的标准电动势为0.32V,若在Pb2+离子溶液中加入少量Na2S溶液,则电池的电动势值将升高。( )
A. 对
B. 错
He bought some books______you.
A. for
B. to
C. at
D. in
He passed some books________me
A. for
B. to
C. of
D. at
multisim和altium designer功能一样
A. 对
B. 错