NO3- Net Ionic Equation The balanced net ionic equation includes only species that are involved in the reaction. It can be found by removing ions that occur on both the reactant and product side of the complete ionic equation. CO32-(aq)+ Pb2+(aq)= PbCO3(s) ...
NO3- Na+ Net Ionic Equation The balanced net ionic equation includes only species that are involved in the reaction. It can be found by removing ions that occur on both the reactant and product side of the complete ionic equation. Pb2+(aq) + CO32-(aq) = PbCO3(s) ...
7.在Pb(NO3)2溶液中,若要以 PbCO3形式沉淀,可加入 Na2CO3或通入 CO2气体,虽然两者都有沉淀生成,但用使 Pb2+沉淀更完全。 这是因为 。 若是用相同浓度的 Na2CO3和(NH4)2CO3作沉淀剂,比的沉淀效果更好,因为 相关知识点: 试题来源: 解析 Na2CO3 通CO2生成H2CO3溶液,电离出的CO 很少,且在生成PbCO3...
硝酸铅〔Pb(NO3)2〕的稀溶液中滴入几滴稀Na2CO3,生成白色PbSO4沉淀,再滴入数滴饱和醋酸钠溶液,微热,并不断搅拌,沉淀慢慢溶解。以上发生的都是复分解反应,写出反应过程的离子方程式:___。试推测第二步离子反应发生的原因是___。 试题答案 在线课程 解析:Pb2+与反应生成PbSO4,是复分解反应,PbSO4溶解也是阴阳离...
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三、奇数配偶法配平化学方程式1.FeS2 +0,点燃Fe2O3+SO22.Na2O2+CO2=Na2CO3+O26.Pb(NO3)2PbO +NO2↑ +02↑7.Na+HO NaOH +H2↑8.CaCO3+SO2+02CaSO4+CO29.02点燃CO +CO210.CH4+NO_2CO_2+ N2+H2O 相关知识点: 试题来源: 解析 三、1.4;11;2;8 2.2;2;2;1 3.1;4;1;1;2 4.2;2;1;1...
Na2CO3+ Ba(NO3)2= BaCO3+ Na2(NO3)2 ReactantsProducts Na22✔️ C11✔️ O99✔️ Ba11✔️ N22✔️ Since there is an equal number of each element in the reactants and products of Na2CO3 + Ba(NO3)2 = BaCO3 + Na2(NO3)2, the equation is balanced. ...
12. 室温下, 通过矿物中 PbSO4获得 Pb(NO3)2的过程如下: D Na2CO3溶液HNO3PbSO4 脱硫 →PbCO3→溶解Pb(NO3)2已知: K_(sp)(PbSO_4)=1.6*10^(-8) , K_(sp)(PbCO_3)=7.4*10^(-14)cm 下列说法正确的是 A. Na_2CO_3 溶液中: c(OH^-)c(H_2)+c(HCO_3^-)+c(H_2CO_3) B.反...
The balanced net ionic equation includes only species that are involved in the reaction. It can be found by removing ions that occur on both the reactant and product side of the complete ionic equation. PbI2(s) + CO32-(aq) = PbCO3(s) + 2I-(aq) ...
D、向X点对应的饱和溶液中加入少量Pb(NO3)2,c(Pb2+)浓度增大,而-lgc(Pb2+)减小; 解答解:A、Ksp(PbCO3)<Ksp(PbSO4),Pb2+相同时b曲线中R2-大,所以b是PbSO4,故A正确; B、PbSO4和Na2CO3反应CO32-(aq)+PbSO4(s)?PbCO3(s)+SO42-(aq),PbCO3△––––––△_PbO+CO2↑、2PbO+C△–––...