KOH ℹ️ Lookup K3PO4 ℹ️ Lookup H2O Complete Ionic Equation The complete (or total) ionic equation includes spectator ions. Write it by breaking all the soluble ionic compounds into their respective ions. Make sure that any subscripts are moved into the coefficient of the resulting...
H3PO4+ KOH → K3O4P + H2O 复合系数摩尔质量摩尔(克/摩尔)重量(克) 反应物 磷酸氢氧化钾 H3PO4197.995182 KOH356.10564 产品 磷酸鉀水 K3O4P1212.266262 H2O318.01528 这个计算器将确定反应的限制试剂。 Instructions To calculate the limiting reagent, enter an equation of a chemical reaction and press ...
B.3KOH+H3PO4=K3PO4+3H2O C.CuO+H2=△Cu+H2O D.NH4Cl+NaOH=NaCl+NH3↑+H2O 相关知识点: 试题来源: 酸的通性pH值练习题 解析 答案:B。 中和反应是指酸和碱作用生成盐和水的反应,反应物是酸和碱; A、AgNO3不是碱,故A错误; B、氢氧化钾是碱,磷酸是酸,两者中和生成盐和水,故B正确; ...
解答一 举报 答案是B磷酸是三元酸,与KOH进行分步反应:H3PO4+KOH=KH2PO4+H2OKH2PO4+KOH=K2HPO4+H2OK2HPO4+KOH=K3PO4+H2O分析:1、一开始产生的沉淀应该是KH2PO4,说明KH2PO4是不溶于无水乙醇的2、“继而又逐渐减少至消失”,... 解析看不懂?免费查看同类题视频解析查看解答 更多答案(2) ...
H3PO4 + KOH arrow K3PO4 + H2O How many milliliters of a 0.283 M HCl solution are needed to neutralize 259 mL of a 0.0431 M Ba(OH)2 solution? (Answer in mL) Calculate the volume (in mL) of 0.100 M H3PO4 required to neutralize 30.0 mL of 0.050 ...
【题目】请配平以下氧化还原反应的方程式(1)HClO3+P4+H2OHC1+H3PO4(2)P4+KOH+H2OK3PO4+PH3(3)(NH4)2PtCl6-Pt+NHCl+HC1+N2(4)PbO2+MnBr2+HNO3Pb(NO3)2Br2+HMnO4+H2O(5)KMnO4+HClKC1+MnCl2+C12↑+H2O(6)MnO_4^-+ so3+OH MnO2+so+H_2O (7)H2PO2+Ag++H2OH3PO4+Ag↓+H2↑(...
下列反应中,属于中和反应的是( )A. HCl+AgNO3═AgCl↓+HNO3B. 3KOH+H3PO4═K3PO4+3H2OC. CuO+H2═Cu+H2OD. NH4Cl+NaOH═NaCl+NH3↑+H2O
【题目】请配平以下氧化还原反应的方程式(1)HCIO3+P4+H2O =HCl+H3PO4(2)P4+KOH +H_2O= K3PO4+PH3(3)Cu+HNO3(浓)=Cu(NO)3+NO2↑+H2O(4)MnO4+SO_3^(2-)+ OH =_MnO_4^(2-)+SO_4^(2-)+ H2O 相关知识点: 试题来源: 解析 【解析】 (1) 10:3;18;10:12 (2) 2:9;...
下列反应中.属于中和反应的是( ) A.HCl+AgNO3═AgCl↓+HNO3B.3KOH+H3PO4═K3PO4+3H2OC.CuO+H2═Cu+H2OD.NH4Cl+NaOH═NaCl+NH3↑+H2O
下列反应中,属于中和反应的是( ) A、HCl+AgNO3═AgCl↓+HNO3 B、3KOH+H3PO4═K3PO4+3H2O C、CuO+H2═Cu+H2O D、NH4Cl+NaOH═NaCl+NH3↑+H2O查看答案和解析>> 科目: 来源: 题型: 实验室用加热高锰酸钾的方法制氧气,主要操作步骤有:①检查装置的气密性,②将高锰酸钾装入试管,③给试管加热,④组装...