硫酸与氢氧化钡反应的热化学方程式为:2H+(aq)+SO42-(aq)+Ba2+(aq)+2OH-(aq)=BaSO4(s)+H2O(l) ∆H=akJ·mol-1 氯化氢与氢氧化钠反应的热化学方程式为:H+(aq)+OH-(aq)=H2O(l) ∆H=bkJ·mol-1 根据盖斯定律,①-②×2得,Ba2+(aq)+SO42-(aq)=BaSO4(s) ∆H=(a-2b...
Calculate the complete and net ionic equations, spectators and precipitates in H2SO4(aq) + Mg(OH)2(s) = MgSO4(aq) + 2H2O(l)
已知: H2SO4(aq) 与 Ba(OH)2(aq) 反应的 ΔH=−1584.2kJ·mol−1 ;HCI(aq)与NaOH(aq)反应的 ΔH=
H2SO4(aq)+Mg(OH)2(s)→MgSO4(aq)+2HOH(l) H2SO4 酸 (OH) 2 碱 反应物: H2SO4–硫酸 ,Sulfuric acid(Sulphuric acid) 外观: 液态 | 无色无臭 | 有酸味 | 清澈而黏稠 Mg(OH)2–Magnesium hydroxide 其他名称:氢氧化镁 ,輕燒鎂砂
H2SO4(aq) + Mg(OH)2(s) = MgSO4(aq) + 2H2O(l) might be an ionic reaction. Calculate the net ionic equation for H2SO4(aq) + Mg(OH)2(s) = MgSO4(aq) + 2H2O(l). Reactants Sulfuric Acid - H2SO4 [S(Oh)2O2] [So2(Oh)2] Oil Of Vitriol Hydrogen Sulfate Battery Ac...
2H+(aq)+2OH-(aq)+Ba2+(aq)+SO42-(aq) = BaSO4(s)+2H2O(l) ΔH3=-1584.2 kJ·mol-1③ 根据盖斯定律由③=①×2+②知,ΔH3=2ΔH1+ΔH2,ΔH2=2ΔH1-ΔH3=-1473kJ·mol-1。答案选D。 【考点定位】考查盖斯定律的应用,反应热的计算等知识 【名师点睛】本题考查了盖斯定律的应用,...
①C(s)+O2(g)=CO2(g); C(s)+1/2O2(g)=CO(g)②S(s)+O2(g)=SO2(g); S(g)+O2(g)=SO2(g)③H2(s)+1/2O2(g)=H2O(l); 2H2(g)+O2(g)=2H2O(l)④2KOH (aq) +H2SO4(aq)=K2SO4(aq)+2H2O (l);2KOH (aq) +H2SO4(浓)=K2SO4(aq)+2H2O (l) A.①③ B.②④ C.②...
已知H (aq) OH−(aq)⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯H2O(1) ;△H=-57.3 kJ/mol.有以下4个化学反应的方程式:① H2SO4(aq) 2NaOH
H2SO4(aq)→2H+(aq)+ SO42-(aq) Mg2+(aq)+ SO42-(aq)+2H2O(l)= Mg(OH)2(s)+2H+(aq)+ SO42-(aq) Spectator Ions Spectator ions are ions that do not take part in the reaction. They are removed from the complete ionic equation to get the net ionic equation. ...
故答案为:SiH4(g)+O2(g)=SiO2(g)+2H2O(l)△H=-1427.2kJ/mol; (2)已知:①2H+(aq)+2OH-(aq)+Ba2+(aq)+SO42-(aq)═BaSO4(s)+2H2O(l)△H=-1584.2kJ?mol-1 ②H+(aq)+OH-(aq)═H2O(l)△H1=-55.6kJ?mol-1 根据局该定律,则反应Ba2+(aq)+SO42-(aq)═BaSO4(s)等于①-②×2...