你可能感兴趣的试题
CaO + H2O = Ca(OH)2 C + H2OCO + H2 NaOH + HCl = NaCl + H2O 2Mg + CO22MgO +C.
H2O(g)=H2(g)+1/2 O2(g) ΔH=+242 kJ/mol 2 H2(g)+O2(g)=2 H2O(g) ΔH=-484 kJ/mol H2(g)+1/2 O2(g)=H2O(g) ΔH=+242 kJ/mol 2 H2(g)+O2(g)=2 H2O(g) ΔH=+484 kJ/mol
CaO + H2O = Ca(OH)2 C + H2O CO + H2 NaOH + HCl = NaCl + H2O 2Mg + CO22MgO +C.
H2(g) CO(g) C.8H18(l) CH4(g)
由反应①、②可知如图所示的热化学方程式为CO(g)+H2O(g)==== CO2(g)+H2(g)ΔH = -41.2 kJ·mol-1 H2的燃烧热为241.8 kJ·mol-1 H2(g)转变成H2O(g)的化学反应一定要释放能量 根据②推知反应H2(g)+1/2O2(g)==== H2O(l)ΔH > -241.8 kJ·mol-1
C.+ H2O == CO + H2 ∆H= +131.3 kJ mol H -1 C(s)+ H2O(g) == CO(g) + H2(g) ∆H= +10.94 kJ·mol -1 C(s)+ H2O(l) == CO(g) + H2(g) ∆H= +131.3 kJ· mol -1 C(s)+ H2O(g) == CO(g) + H2(g)∆H= +131.3 kJ· mol -1
2H2(g) + O2(g)= 2H2O(g) △H1 ; 2H2(g) + O2(g) = 2H2O(l) △H2 S(g) + O2(g) =SO2(g) △H1 ; S(s) + O2(g) = SO2(g) △H2 CO(g) + 1/2 O2(g) = CO2(g) △H1 ;2CO(g) + O2(g) = 2CO2(g) △H2 C.(s)+H2O(g)=CO(g)+H2(g) △H1 ;CaO(s)+H2O(l)===Ca(OH)2(s) △H2
⇌ → 的是() A. CO⇌CO2→CaCO3 B. CO2⇌C.6H12O6→H2O C. O2⇌H2O→H2 Cu⇌CuO→Cu(OH)2
0.5 mol CO+2 mol H2O(g)+1 mol CO2+1 mol H2 1 mol CO+1 mol H2O(g)+1 mol CO2+1 mol H2 0.5 mol CO+1.5 mol H2O(g)+0.4 mol CO2+0.4 mol H2 0.5 mol CO+1.5 mol H2O(g)+0.5 mol CO2+0.5 mol H2