化学方程式线上! 高级搜索 NH4Cl(aq)+KOH(aq)→KCl(aq)+NH3(aq)+H2O(l) 这是酸碱反应(中和反应):NH4Cl是酸,KOH是碱. 反应物: 产物:
Balance NH4Cl + KOH = NH3 + KCl + H2O Using Inspection The law of conservation of mass states that matter cannot be created or destroyed, which means there must be the same number atoms at the end of a chemical reaction as at the beginning. To be balanced, every element in NH4Cl...
A. KOH B. H2O C. CaCl2 D. NH4Cl 免费查看参考答案及解析 题目: [选择题] 下列物质中,只含有非极性共价键的是( )A. NaOH B. NH4Cl C. H2 D. H2S 免费查看参考答案及解析 题目: [选择题] 25 C时,在pH均等于5 的H2SO4和NH4Cl 两种溶液中,设由水电离产生的H+浓度分别为amol/L与bmol/L,...
B.NaOH(aq)+HCl(aq)=NaCl(aq)+H2O(l) △H<0C.2H2(g)+O2(g)=2H2O(l) △H<0该原电池的负极是通入___(填“氢气”或“氧气”)的一极。②以KOH溶液为电解质溶液,依据所选反应设计一个原电池,其负极反应式为___。③电解原理在化学工业中有着广泛的应用。如图所示电解池中,a为NaCl溶液,X和Y是...
KOH+H2SO4→KHSO4+H2O 氯化钾和硫酸可 在高温下反应,生成硫酸氢钾和氯化氢气体。KCl+H2SO4→KHSO4+HCl 液态的硫酸氢钾会被喷洒到空中,在空中它冷却并凝固成固态的硫酸 nh4cl水解离子方程式 nh4cl 水解离子方程式 化学方程式是 NH4Cl+H2O=可逆 NH3·H2O+HCl,离子方程式是 NH+ +H2O=可 逆 NH3·H2O+H+. 1、...
What is the final volume after diluting 2.50 mL of an 8.00 M KOH solution to give a 2.00 M KOH solution? What is the molarity of a solution made by diluting 53.18 mL of an 18.7 M ammonia solution with enough water to form 838 mL of solution?...
解答: 解:①HCl(aq)+NH3?H2O(aq)=NH4Cl(aq)+H2O(l);△H=a kJ?mol-1,NH3?H2O是弱电解质,电离吸热,所以反应放出的热量小于57.3kJ;②HNO3(aq)+KOH(aq)=NaNO3(aq)+H2O(l);△H=c kJ?mol-1,HNO3、KOH为强酸与强碱,其稀溶液发生中和反应的热效应:H+(aq)十OH-(aq)=H2O△H3=-57.3kJ/mol;③HCl...
强酸和强碱稀溶液的中和热科表示为H+(aq)+OH-(aq)=H2O(l);△H=-57.3kJ·mol-1已知: ①HCl(aq)+NH3·H2O(aq)=NH4Cl(aq)+H2O(l);△H=-a kJ·mol-1 ②HCl(aq)+NaOH(s)=NaCl(aq)+H2O(l);△H=-b kJ·mol-1 ③HNO3(aq)+KOH(aq)=NaNO3(aq)+H2O(l);△H=-c kJ·mol-1则a、b、c...
A. H2SO4(aq)+2NaOH(aq)=Na2SO4(aq)+2H2O(l)△H1=aKJ•mol-1 B. HNO3(aq)+KOH(aq)=KNO3(aq)+H2O(l)△H2=bKJ•mol-1 C. HCl(aq)+NH3•H2O(aq)=NH4Cl(aq)+H2O(l)△H3=cKJ•mol-1 D. H+(aq)+OH-(aq)+1212Ba2+(aq)+1212SO42-(aq)=1212BaSO4(s)+H2O(l)△H4=dKJ...
①HCl(aq)+NH3•H2O(aq)→NH4Cl(aq)+H2O(l)+a kJ,NH3•H2O是弱电解质,电离过程吸热,因此a<55.8;②HCl(aq)+NaOH(s)→NaCl(aq)+H2O(l)+b kJ,氢氧化钠固体溶解放热,因此b>55.8;③HNO3(aq)+KOH(aq)→KNO3(aq)+H2O(l)+c kJ,符合中和热的概念,因此c=55.8,...