b = 20 (NaOH) c = 20 (Na2O) d = 1 (H20) Step 4: Substitute Coefficients and Verify Result Count the number of atoms of each element on each side of the equation and verify that all elements and electrons (if there are charges/ions) are balanced. ...
NaOH(aq)→ Na+(aq)+ OH-(aq) Na+(aq)+ OH-(aq)+ H(g)= H2O(l)+ Na(s) 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. ...
就是设系数了，原则是反应前后物质守恒：a*Na+b*H2O=c*NaOH+d*H2 Na:a=c,O:b=c,H:2*b=c+2*d，a=b=c=2,d=1
解答一 举报 电子转移法:从氧化还原的本质出发,原则是反应中化学价差变化相等,反应中Na由0价转变为+1,↑1,H由+1转变为0,↓1,Na:H=1:1,NaOH:H2=2:1.2Na+2H2O=2NaOH+H2待定系数法:就是设系数了,原则是反应前后物质守恒:a*Na+b*H... 解析看不懂?免费查看同类题视频解析查看解答 ...
解:先可将NaOH前的计量数设为“2”,再根据2来将左边的Na与O两种元素配平,最后再配H元素. 故答案为: 2Na+2 H2O =2NaOH+ H2 化学方程式的配平就是要使等号两边每种原子的数目必须相等; 如果某一化学式中所含的元素很多时可先将其计量数设为“1”或“2”.结果...
Complete and balance this equation: Na_2CO_3 + Mg_3(PO_4)_2 \rightarrow Balance the following chemical equation. N a + H 2 O H 2 + N a O H Balance this equation Na(CO3)2+H2SO4=NA(SO4)2+H2O+CO2 Balance the following equation:o) H2S + HNO3 \longrightarrow S +...
在反应Na+H2O═NaOH+H2↑中氧化剂是 .氧化产物是 .生成33.6LH2 时转移电子数为 .配平方程式并用单线桥表示此反应电子转移的方向和数目: .
a) 3HNO3 (aq)+Al(OH)3 (s)=Al(NO3)3+3H2O (l) b) Na2CO3 (s)+H2SO4 (aq)=H2O (l)+CO2 (g)+Na2SO4 (aq) Balanced Chemical Reaction: A chemical reaction can be pronounced by the balanced chemical reaction, if...
分子式:H2NC(=NH)NH(CH2)3CH(NHSO2C6H4CH3)CO2CH3 �HCl 产地:广州 包装规格:10G,25G,100G,250G,500G 品牌:Codow可道 货号:CD107780 CAS编号: 1784-03-8 别名:N-对甲苯磺酰基-L-精氨酸甲酯盐酸盐|Nα-p-Tosyl-L-arginine methyl ester hydrochloride |TAME hydrochloride|N-4-Tosyl-L-arginine...
分析:由氢氧化钠和稀盐酸反应的微观示意图,可知由于稀盐酸中的H+与氢氧化钠中的OH-结合成H2O使反应符合复分解反应发生条件而发生反应,反应前后Na+、Cl-的个数不变. 解答:解:A、氯化氢与氢氧化钠通过交换成分而发生反应,符合两化合物相互交换成分生成两种化合物的复分解反应的特点,故A正确; ...