Zn(OH)2(aq) + H2SO4(aq) arrow ZnSO4(aq) + 2H2O(l) Determine whether or not the following reaction is a redox reaction. HBr(aq) + Na2S(aq) arrow NaBr(aq) + H2S(g) Determine whether the following reaction is an oxidation-reduction reaction. H2CO3(aq) + Ca(...
三、仪器和试剂电位差计1台 检流计1台标准电池1只 直流稳压电源1台饱和甘汞电极1支 铜电极2支锌电极1支 电极管3支50cm3烧杯4个 饱和KCl溶液电极架3支 铜片(镀铜用的阳极) 稀H2SO4 稀HNO3ZnSO4溶 5、液0.1000mol·dm-3 砂纸CuSO4溶液0.1000mol·dm-3 ,0.01000mol·dm-3镀铜溶液(CuSO4·5H2O125g·dm-3...
解:负极:解:负极:Zn(s) 2e Zn2+ 正极:正极:PbSO4 (s)+2e Pb(s)+SO42-(m-)电池反应:电池反应:PbSO4 (s)+ Zn(s)= Pb(s)+ZnSO4(m)8 E =0.5477+0.0591lg(0.38 0.01)=0.4046V E = (PbSO4/Pb) (Zn2+/Zn)= 0.4046V (PbSO4/Pb)= 0.358V)(ln2) 1 (4ZnSOaFRTEE)/ln(5477. 0mmF ...
Calcium nitrate (Ca(NO3)2), zinc sulfate (ZnSO4), indium chloride (InCl3), thioacetamide (TAA), potassium dichromate, sulfuric acid (H2SO4), and ammonium oxalate were obtained from Aladdin Industrial Inc. (Shanghai, China). Diphenylcarbazide (DPC) was purchased from J & K Scientific Ltd....
The formulae for these reactions are: MnO2 + 2FeSO4 + 3H2SO4 → MnSO4 + Fe2(SO4)3 + 2H2O, (1) Fe + Fe2(SO4)3 → 3FeSO4, (2) Fe + H2SO4 → FeSO4 + H2, (3) Zn + H2SO4 → ZnSO4 + H2. (4) When the dry battery is dissolved in steel acid cleaning waste solution, ...