8.已知 '((O)_(2)/OH)=0.401V, ^theta ((S)(S))=-0.48V _(sp)^theta ((Ag)_(2)S)=-|||-.3times (10)^-50, _(P)[ Ag((CN))_(2)] =1.3times (10)^21 在空气存在下将A g2S溶解在NaCN-|||-溶液中,反应生成A g(CN)2和单质硫。(1)写出相应反应的离子方程式;-|||-(2)计算25℃时该反应的标准平衡常数。

已知: varphi ((R)_(2)|(Cl)^-)=1.36V (varphi )^theta ((O)_(2)|(OH)^-)=0.401V (varph

(7)已知 _(sp)^theta ((Ag)_(2)(Cr{O)_(4)}^-)=1.1times (10)^-12 _(sp)^theta (pbcr(O)

例10 已知298K时,A gBr(s)的 _(sp)^theta =4.86times (10)^-13 (varphi )_(Ag)+(mu )_(k)=0

_(sp)^theta (Fe((OH))_(3))=2.8times (10)^-39

1.已知 _(10)^theta (ZnS)=2.5times (10)^-22 ,_(i1)^theta ((H)_(2)S)=1.07times (10)^

6.已知 (varphi )^theta ((Mn)^2+Mn)=-1.029V ; (varphi )^theta ((Cu)^2+/Cu)=0.342V ;

已知将反应(varphi )^theta ((Ag)^+/Ag)=0.80V , (varphi )^theta ((Fe)^3+/(Fe)^2+)=0.77V

已知Ag2S的分子量为248, _(sp)=1.3times (10)^-49, 溶液中溶解的Ag 2S约为 ()-|||-(gcdot (dm)^-3)-||

已知 (298 K) 时 φ⊖Ag+| Ag=0.799 V，电池 (Pt)|({{H)}_2}|({{H)}_2}(S)({{O)}_4}((aq))|(A)

11.已知25℃时 ^theta ((Br)^-|AgBr|Ag)=0.0713V, 则对于下述反应:-|||-H2(p^e )+2AgBr(s )→2Ag(s