在理论上可设计成原电池的化学反应是( )
A.C(s)+H2O(g)===CO(g)+H2(g) ΔH>0 |
B.Ba(OH)2·8H2O(s)+2NH4Cl(s)===BaCl2(aq)+2NH3·H2O(l)+8H2O(l) ΔH>0 |
C.CaC2(s)+2H2O(l)―→Ca(OH)2(s)+C2H2(g) ΔH<0 |
D.CH4(g)+2O2(g)―→CO2(g)+H2O(l) ΔH<0 |
在理论上可设计成原电池的化学反应是( )
A.C(s)+H2O(g)===CO(g)+H2(g) ΔH>0 |
B.Ba(OH)2·8H2O(s)+2NH4Cl(s)===BaCl2(aq)+2NH3·H2O(l)+8H2O(l) ΔH>0 |
C.CaC2(s)+2H2O(l)―→Ca(OH)2(s)+C2H2(g) ΔH<0 |
D.CH4(g)+2O2(g)―→CO2(g)+H2O(l) ΔH<0 |