在理论上可用于设计原电池的化学反应是 ( )
A.2Al(s)十2NaOH(aq)+2H2O(1)=2NaAlO2(ag)+3H2(g);△H <0 |
B.Ba(OH)2·8H2O(s)+2NH4Cl(s)=BaCl2(aq)+2NH3·H2O(aq)+8H2O(1);△H >0 |
C.CaC2(s)+2H2O(1)→Ca(OH)2(s)+C2H2(g);△H <0 |
D.FeCl3(aq)十3H2O(1) Fe(OH)3(s)+3HCl(aq);△H >0 |
在理论上可用于设计原电池的化学反应是 ( )
A.2Al(s)十2NaOH(aq)+2H2O(1)=2NaAlO2(ag)+3H2(g);△H <0 |
B.Ba(OH)2·8H2O(s)+2NH4Cl(s)=BaCl2(aq)+2NH3·H2O(aq)+8H2O(1);△H >0 |
C.CaC2(s)+2H2O(1)→Ca(OH)2(s)+C2H2(g);△H <0 |
D.FeCl3(aq)十3H2O(1) Fe(OH)3(s)+3HCl(aq);△H >0 |