答案:PbO2+4HCl==PbCl2+Cl2↑+2H2O;氧气;空气(或氧气)。(3) 因为PbSO4+2NaCl==PbCl2+Na2SO4 且PbCl2+2H2O⇌Pb(OH)2+2HCl,当温度高于70℃时,PbCl2水解生成的HCl易挥发,促进了水解,所以浸取率不高,为了提高浸取率,还可以采取的措施是延长浸取时间或充分搅拌。答案:PbCl2水解生成HCl,超过70℃时...
题目,试判断二氧化铅与浓盐酸反应的化学方程式正确的是( ) A. PbO2+4HCl===PbCl4+2H2O B. PbO2+4HCl===PbCl2+Cl2↑+2H2O C. PbO2+2HCl+2H+===PbCl2+2H2O D. PbO2+4HCl===PbCl2+2OH- 相关知识点: 试题来源: 解析 B 反馈 收藏
例子 CH3CH2NH2(Cl)CH3 Fe4CCr Fe6CCr Fe8CCr Fe10CCr Na4(Li)(Fe)(Co)(Ni)(Mn2)O12 Cd(Cl2) AtH7 CH4(NO)2 NH4MnO3 H4NNO3 MgNH4PO4(6H2O) 近期计算过的摩尔质量近期平衡的方程式 Pb(OH)2 + HCl = H2O + PbCl2 Pb(OH)2 + HCOOH = Pb(HCOO)2 + H2O计算器 ...
a = 1 (Pb2O2) b = 4 (HCl) c = 2 (PbCl2) d = 2 (H2O) 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. ...
使用本计算器来平衡PbO2 + HCl + Ba(OH)2 = Pb(OH)2 + H2O + Ba(ClO3)2 + PbCl2化学方程式或反应!
16.完成下列化学反应方程式。解:(1)PbO2+2H++H2O2 →Pb2++O2↑+2 H2O(2)Pb3O,+4 HNO3 →PbO2+2 Pb(NO3)2+2 H
[详解](1)盛有PbO2的圆底烧瓶中滴加浓盐酸,产生黄绿色气体,则该气体为氯气,根据氧化还原反应的规律及元素守恒可知,产物还有PbCl2和水,其化学方程式为:PbO2+4HCl (浓)= PbCl2+Cl2↑+4H2O;A.滴加甲基橙试剂显红色的溶液中:14÷12*1/3=10B.滴入KSCN显血红色的溶液中:2*1/8+4*1/4+1+2*1/2...
(2)PbO2+HCl(浓) → PbCl2+Cl2+H2O (3)SO2+O2 → SO3 扫码下载作业帮搜索答疑一搜即得 答案解析 查看更多优质解析 举报 第一个错了.Cl2+2OH- → Cl-+\x01CLO-+H2OPbO2+4HCl(浓) → PbCl2+Cl2+2H2O 2SO2+O2 → 2SO3 解析看不懂?免费查看同类题视频解析查看解答...
H2O 2 18.01528 To calculate the stoichiometry of PbCl2 + H2O = Pb + Cl + H2O you must balance the equation to find the stoichiometric mole ratio of each compound. The equation can be balanced using the chemical equation balancer. The stoichiometry calculator above shows the mole...
Pb(NO3)2(aq)→ Pb2+(aq)+2NO3-(aq) 2HCl(aq)→2H+(aq)+2Cl-(aq) 2H(NO3)(aq)→2H+(aq)+2NO3-(aq) Pb2+(aq)+2NO3-(aq)+2H+(aq)+2Cl-(aq)= PbCl2(s)+2H+(aq)+2NO3-(aq) Spectator Ions Spectator ions are ions that do not take part in the reaction. They are removed...