0.1 mol·L-1 H2S 溶液中,[S2-]的正确表示是…( )
A: [S2-] = [H+]
B: [S2-] =Ka1[H+]
C: [S2-] = Ka2
D: [S2-] = [H2S]1/3
A: [S2-] = [H+]
B: [S2-] =Ka1[H+]
C: [S2-] = Ka2
D: [S2-] = [H2S]1/3
举一反三
- 0.1 mol·L-1 H2S 溶液中,[S2-]的正确表示是…( ) A: [S2-] = [H+] B: [S2-] =[img=1x1]1803343050bd191.gif[/img][H+] C: [S2-] = Ka2 D: [S2-] = [H2S]1/3
- H2S溶液中,c(H+):c(s2-)=2:1
- 已知: Zn(s) + 1/2 O 2 (g) = ZnO(s) ∆ r H m q 1 = -351.5 kJ · mol -1 Hg(l) + 1/2 O 2 (g) = HgO(s , 红 ) ∆ r H m q 2 = -90.8 kJ · mol -1 则 Zn(s) + HgO(s , 红 ) = ZnO(s) + Hg(l) 的 ∆ r H m q 为( ) (kJ · mol -1 )
- Na2S 溶液的质子条件式为 A: c(H+ )+ c(HS- ) + 2 c(H2S) = c(OH- ) B: c(H+ )+c(Na+ ) = c(HS - )+2 c(S2- ) + c(OH- ) C: c(H+ )+ c(H2S) = c(HS - ) +2 c(S2- )+ c(OH- ) D: c(H+ )+ c(HS- ) + c(H2 S) = c(OH- )
- Ag2S的Ksp=2.0×10-48,若S2-考虑的水解,其在纯水中的溶解度计算式为( )。 A: s=(Ksp)1/3; B: s=(Ksp/4)1/3; C: s=(Ksp•αS2- (H))1/3; D: s=( Ksp•αS2- (H)/4)1/3。