标准电极电势表样本

标准电极电势表

标准电极电势能够用来计算化学电池或原电池的电化学势或电极电势。本表中所给出的电极电势以标准氢电极为参比电极, 溶液中离子有效浓度为1mol/L, 气体分压为100kPa, 温度为298K, 所有离子的数据都在水溶液中测得。[1][2][3][4][5][6][7][8][9]单击每栏上方的符号可将数据按元素符号或标准电极电势值排序。

注: (s) –固体; (l) –液体; (g) –气体; (aq) –水溶液; (Hg) –汞齐。

半反应E°(V)[注 1]来源

Ba++ e−Ba(s) −4.38 [10][1][3]

Sr++ e−Sr(s) −4.10 [11][1][3] Ca++ e−Ca(s) −3.8 [11][1][3]

Pr3++ e−Pr2+−3.1 [11]

 N2(g) + H++ e−HN3(aq) −3.09 [6]

Li++ e−Li(s) −3.0401 [5]

N2(g) + 4 H2O + 2 e−2 NH2OH(aq) + 2 OH−−3.04 [6]

Cs++ e−Cs(s) −3.026 [5]

半反应E°(V)[注 1]来源Ca(OH)2(s) + 2 e−Ca(s) + 2 OH−−3.02 [11] Rb++ e−Rb(s) −2.98 [4]

K++ e−K(s) −2.931 [5] Mg++ e−Mg(s) −2.93 [10] Ba2++ 2 e−Ba(s) −2.912 [5]

La(OH)3(s) + 3 e−La(s) + 3OH−−2.90 [5]

Fr++ e−Fr(s) −2.9 [11] Sr2++ 2 e−Sr(s) −2.899 [5]

Sr(OH)2(s) + 2 e−Sr(s) + 2 OH−−2.88 [11] Ca2++ 2 e−Ca(s) −2.868 [5] Eu2++ 2 e−Eu(s) −2.812 [5] Ra2++ 2 e−Ra(s) −2.8 [5] Yb2++ 2 e−Yb(s) −2.76 [11][1] Na++ e−Na(s) −2.71 [5][9]

半反应E°(V)[注 1]来源Sm2++ 2 e−Sm(s) −2.68 [11][1] No2++ 2 e−No(s) −2.50 [11] HfO(OH)2(s) + H2O + 4 e−Hf(s) + 4 OH−−2.50 [11] Th(OH)4(s) + 4 e−Th(s) + 4 OH−−2.48 [11] Md2++ 2 e−Md(s) −2.40 [11] La3++ 3 e−La(s) −2.379 [5]

Y3++ 3 e−Y(s) −2.372 [5] Mg2++ 2 e−Mg(s) −2.372 [5] ZrO(OH)2(s) + H2O + 4 e−Zr(s) + 4OH−−2.36 [5]

Pr3++ 3 e−Pr(s) −2.353 [11] Ce3++ 3 e−Ce(s) −2.336 [11] Er3++ 3 e−Er(s) −2.331 [11] Ho3++ 3 e−Ho(s) −2.33 [11]

Al(OH)4−+ 3 e−Al(s) + 4 OH−−2.33

半反应E°(V)[注 1]来源Al(OH)3(s) + 3 e−Al(s) + 3OH−−2.31

Tb3++ 3 e−Tb(s) −2.28

H2(g) + 2 e−2 H−−2.25

Ac3++ 3 e−Ac(s) −2.20

Be++ e−Be(s) −2.12 [10] Cf2++ 2 e−Cf(s) −2.12 [11] Am3++ 3 e−Am(s) −2.048 [11] Cf3++ 3 e−Cf(s) −1.94 [11] Am2++ 2 e−Am(s) −1.9 [11] Be2++ 2 e−Be(s) −1.85

Rf4++ 4 e−Rf(s) −1.67 [12]

U3++ 3 e−U(s) −1.66 [7]

Al3++ 3 e−Al(s) −1.66 [9]

半反应E°(V)[注 1]来源Ti2++ 2 e−Ti(s) −1.63 [9]

Bk2++ 2 e−Bk(s) −1.6 [11] ZrO2(s) + 4 H++ 4 e−Zr(s) + 2 H2O −1.553 [5]

Hf4++ 4 e−Hf(s) −1.55 [11]

Zr4++ 4 e−Zr(s) −1.45 [5]

Ti3++ 3 e−Ti(s) −1.37 [13] TiO(s) + 2 H++ 2 e−Ti(s) + H2O −1.31

Ti2O3(s) + 2 H++ 2 e−2 TiO(s) + H2O −1.23

Zn(OH)42−+ 2 e−Zn(s) + 4 OH−−1.199 [14] Mn2++ 2 e−Mn(s) −1.185 [14] Fe(CN)64−+ 6 H++ 2 e−Fe(s) + 4HCN(aq) −1.16 [15]

V2++ 2 e−V(s) −1.175 [2]

Te(s) + 2 e−Te2−−1.143 [2]

半反应E°(V)[注 1]来源Nb3++ 3 e−Nb(s) −1.099

Sn(s) + 4 H++ 4 e−SnH4(g) −1.07

In(OH)3(s) + 3 e−In(s) + 3 OH−−0.99 [11] SiO2(s) + 4 H++ 4 e−Si(s) + 2 H2O −0.91

B(OH)3(aq) + 3 H++ 3 e−B(s) + 3 H2O −0.89

Fe(OH)2(s) + 2 e−Fe(s) + 2 OH−−0.89 [15] Fe2O3(s) + 3 H2O + 2 e−2Fe(OH)2(s) + 2 OH−−0.86 [15] TiO2++ 2 H++ 4 e−Ti(s) + H2O −0.86

2 H2O+ 2 e−H2(g) + 2 OH−−0.8277 [5]

Bi(s) + 3 H++ 3 e−BiH3−0.8 [14] Zn2++ 2 e−Zn(Hg) −0.7628 [5]

Zn2++ 2 e−Zn(s) −0.7618 [5]

Ta2O5(s) + 10 H++ 10 e−2 Ta(s) + 5 H2O −0.75