題目列表(包括答案和解析)
發(fā)生原電池的反應(yīng)通常是放熱反應(yīng),在理論上可設(shè)計成原電池的是: ( )
A..C(s)+H2O(g)=CO(g)+ H2(g);△H>0
B.Ba(OH)2.8H2O(s)+2NH4Cl(s)=BaCl2(aq)+2NH3.H2O (1) +8H2O(1);△H>0
C.CaC2(s)+2H2O(1)→Ca(OH)2(s)+C2H2(g);△H<0
D.CH4(g)+2O2(g)→CO2(g) +2H2O(1);△H<0
A.C(s)+H2O(g)=CO(g)+H2(g);△H>0 |
B.Ba(OH)2?8H2O(s)+2NH4Cl(s)=BaCl2(aq)+2NH3?H2O(l)+8H2O(l);△H>0 |
C.CaC2(s)+2H2O(l)→Ca(OH)2(s)+C2H2(g);△H<0 |
D.CH4(g)+2O2(g)→CO2(g)+2H2O(l);△H<0 |
A.C(s)+H2O(g)CO(g)+H2(g);ΔH>0
B.Ba(OH)2·8H2O+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)+2H2O(l);ΔH<0
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