Pb(NO3)2(aq)→ Pb2+(aq)+2NO3-(aq) Pb(s)+2H+(aq)+2NO3-(aq)= Pb2+(aq)+2NO3-(aq)+ H2(g) Spectator Ions Spectator ions are ions that do not take part in the reaction. They are removed from the complete ionic equation to get the net ionic equation. ...
浓差电池:Pb(Hg)(a1)|Pb(NO3)2(aq)|Pb(Hg)(a2),假如a1> a2,则电动势( ),本题来源于物理化学复习题
百度试题 结果1 题目浓差电池:Pb(Hg)(a1)|Pb(NO3)2(aq)|Pb(Hg)(a2),如果a1> a2,则电动势( ) A. E>0 B. E<0 C. E=0 D. 无法确定 相关知识点: 试题来源: 解析 B 反馈 收藏
Balance Pb(NO3)3 + HCl = PbCl + H(NO3)3 Using the Algebraic Method Step 1: Label Each Compound With a Variable Label each compound (reactant or product) in the equation with a variable to represent the unknown coefficients. a Pb(NO3)3 + b HCl = c PbCl + d H(NO3)3...
在25℃时,电池Pb(Hg)(a1)|Pb(NO3)2(aq)|Pb(Hg)(a2)中a1〉a2,则其电动势E()A.〉0 B.〈0 C.=0 D.无法确定 正确答案:A
第一个 选 A。它是浓差电池,负极 Pb - 2e- = Pb2+;正极 Pb2+ + 2e- = Pb;总:Pb(a1) = Pb(a2)E = - RT/2F * ln a2/a1 由于 a1>a2,所以 ln a2/a1 < 0,所以 E = - RT/2F * ln a2/a1 >0 即选 A。第二个 选 < 0 它也是浓差电池 负极 Cl- -...
百度试题 结果1 题目浓差电池:Pb(Hg)(a1)|Pb(NO3)2(aq)|Pb(Hg)(a2),如果a1> a2,则电动势( )A. E>0 B. E<0 C. E=0 D. 无法确定 相关知识点: 试题来源: 解析 B 反馈 收藏
浓差电池:Pb(Hg)(a1)|Pb(NO3)2(aq)|Pb(Hg)(a2),如果a1> a2,则电动势( ) A. E>0 B. E<0 C. E=0 D. >0 (B) E<0 (C) E=0 (D)无法确定 相关知识点: 试题来源: 解析 B.E<0 直接利用整数乘法、除法法则列竖式计算即可;乘法可用除法验算,除法可用乘法验算....
在25℃时,电池Pb(Hg)(a1)|Pb(NO3)2(aq)|Pb(Hg) (a2)中a1> a2,则其电动势E:().A (A) >0 (B) p2,则此电池电动势___0(选填>,< =) 扫码下载作业帮搜索答疑一搜即得 答案解析 查看更多优质解析解答一 举报 第一个 选 A. 它是浓差电池, 负极 Pb - 2e- = Pb2+;正极 Pb2+ + 2e- = ...
Since there is an equal number of each element in the reactants and products of Na2SO4 + Pb(NO3)2 = Na2(NO3)2 + PbSO4, the equation is balanced. Balance Using Inspection Step 1: Count the number of each element on the left and right hand sides ...