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Al(OH)3(s)+NaOH(aq) NaAl(OH)4(aq);△H<0 CH3CH2OH(l)+3O2(g)→2CO2(g)+3H2O(l); △H<0 4Fe(OH)2(s)+2H2O(l)+O2(g) 4Fe(OH)3; △H<0 H2(g)+Cl2(g) 2HCl(g); △H<0
Al(OH)3(s)+NaOH(aq)====NaAlO2(aq)+2H.2O.(l) ΔH<0
C.2H.5OH(l)+3O.2(g)2CO2(g)+3H.2O.(l) ΔH<0
CO2(g)+C.(s)====2CO(g) ΔH>0 H.2(g)+Cl2(g)====2HCl(g) ΔH<0
H2SO4(aq)+BaCl2(aq)=2HCl(aq)+BaSO4(s);△H.<0 CH3CH2OH(l)+3O2(g) 2CO2(g)+3H2O(l) ;△H.<0 4Fe(OH)2(s)+2H2O(l)+O2(g)=4Fe(OH)3(s) ;△H.<0 3Cu(s)+8HNO3(aq)=3Cu(NO3)2(aq)+2NO(g)+4H2O(l) ;△H.<0
HCl+NaOH= NaCl+H2O ΔH.<0 2CH3OH(l)+3O2(g) =2CO2(g)+4H2O(l) ΔH.<0 4Fe(OH)2(s)+2H2O(l)+O2(g) = 4 Fe(OH)3(s) ΔH.<0 2H2(g)+O2(g) =2H2O(l) ΔH.<0
CH4(g)+2O2(g)==CO2(g)+2H2O(l) HNO3(aq)+NaOH(aq)==NaNO3(aq)+H2O(l) 2H2(g)+O2(g)==2H2O(l) 2FeCl3(aq)+Fe(s)==3FeCl3(aq)
2H2(g) + O2(g) = 2H2O(l) △H<0 2FeCl3(aq) + Fe(s) = 3FeCl2(aq) △H<0 2CH3OH(l) + 3O2(g) = 2CO2(g) + 4H2O(l) △H<0 NaCl(aq) + AgNO3(aq) = AgCl(s) + NaNO3(aq ) △H<0
2C O (g)+ O2(g)==2CO2(g) HNO3(aq)+NaOH(aq)==NaNO3(aq)+H2O(l) 2H2(g)+O2(g)==2H2O(l) Zn(s)+ Ag2 O(s)== Zn O(s)+2Ag(s)
2Al+2NaOH+2H2O===2NaAlO2+3H2↑ 2H2+O2===2H2O Mg3N2+6H2O===3Mg(OH)2+2NH3↑ CH4+2O2===CO2+2H2O
Zn+Ag2O+H2O==Zn(OH)2+2Ag Pb+PbO2+2H2SO4==2PbSO4+2H2O Zn+CuSO4==Cu+ZnSO4 CaO+SiO2CaSiO3
构成原电池的正极和负极必须是两种不同金属 在理论上可将该反应:CH4(g)+2O2(g)→CO2(g)+H2O(l) ΔH.<0,设计成原电池 在铅、银和盐酸构成的原电池工作时,铅板上有5.175 g铅溶解,正极上就有1 120 mL(标准状况)气体析出 原电池工作时,正极和负极上发生的都是氧化还原反应
HCl(aq) + NaOH(aq) = NaCl(aq) + H2O(l) △H < 0 2CH3OH(l) +3O2(g) = 2CO2(g) + 4H2O(l) △H < 0 4Fe(OH)2(s) + 2H2O(l) + O2(g) = 4Fe(OH)3(s) △H < 0 2H2(g) + O2(g) = 2H2O(l) △H < 0
Al(OH)3(s)+NaOH(aq) NaAl(OH)4(aq) △H<0 CH3CH2OH(l)+3O2(g) 2CO2(g)+3H2O(l) △H<0 4Fe(OH)2(s)+2H2O(l)+O2(g) 4Fe(OH)3 (s) △H<0 H2(g)+Cl2(g) 2HCl(g) △H<0
2H2(g)+O2(g)==2H2O(l) △H<0 HCl(aq)+NaOH(aq)==NaCl(aq)+H2O(l) △H<0 2Al(s)+3Cl2(g)==2AlCl3(s) △H<0 Zn(s)+2HCl(aq)==ZnCl2+H2(g) △H<0
HCl(aq)+ NaOH(aq)= NaCl(aq)+ H2O(l) △H < 0 2CH3OH(l)+3O2(g)= 2CO2(g)+ 4H2O(l) △H < 0 4Fe(OH)2 (s)+ 2H2O(l)+ O2 (g)= 4Fe(OH)3 (s) △H < 0 2H2(g)+ O2(g)= 2H2O(l) △H < 0
2H2(g)+O2(g)==2H2O(l) △H<0 HCl(aq)+NaOH(aq)==NaCl(aq)+H2O(l) △H<0 2Al(s)+3Cl2(g)==2AlCl3(s) △H<0 Zn(s)+2HCl(aq)==ZnCl2+H2(g) △H<0
HCl(aq)+ NaOH(aq)=== NaCl(aq)+ H2O(l) △H < 0 2CH3OH(l)+3O2(g)=== 2CO2(g)+ 4H2O(l) △H < 0 Zn(s)+CuSO4(aq)=== ZnSO4(aq)+Cu(s) △H < 0 2H2(g)+ O2(g)=== 2H2O(l) △H < 0