NaOH(aq)+KHC8H4O4>Na+(aq)+K+(aq)+h2O(l)+C8H4O42-(aq) Logged Borek Mr. pH Administrator Deity Member Posts: 27937 Mole Snacks: +1820/-412 Gender: I am known to be occasionally wrong. Re: Titration of the Unknown HCl-H3PO4 Mixture « Reply #3 on: November 20, 2011...
1.000mol/L草酸标准溶液;0.1mol/LNaOH标准溶液(浓度待标定);H2SO4,H3PO4混合酸标准试液(两种酸浓度之和低于0.5mol/L) 4实验步骤 1.开启酸度计预热半小时,连接电极及滴定装置。摘去饱和甘汞电极的橡皮帽,并检查内电极是否浸入饱和KCl溶液中,如未浸入,应补充饱和KCl溶液。安装玻璃电极和饱和甘汞电极,并使饱和甘...
Calculate the pH when 200.0 mL of a 1.00 M solution of H2A (Ka1= 1.0 x 10-6, Ka2= 1.0 x 10-10) is titrated with the following volume of 1.00 M NaOH: 250.0 mL of 1.00 M NaOH. Calculate the pH during the titration ...
What volume in mL of a 0.0992 M NaOH solution is required to reach the endpoint in the complete titration of a 15.0 mL sample of 0.107 M H_3PO_4? Determine if each of the following substances is acidic, basic, or neutral. Also, calculat...
H3PO4(L) NaOH(L) pH Total Volume0,1 1,61 0,10,1 0,001 1,67 0,1010,1 0,002 1,76 0,1020,1 0,003 1,85 0,1030,1 0,004 1,97 0,1040,1 0,005 2,04 0,1050,1 0,006 2,08 0,1060,1 0,007 2,37 0,1070,1 0,008 2,58 0,1080,1 0,009 2,88 0,1090,1...
: KC1 AgrA￡CJ 嫂璃膜時<\试液j和)在滴定过程中,通过测量工作电池的电动势,了解溶液 pH值随加入标准碱溶液体积V的变化情况,然后由pH—V曲线或(△ pH/△V)—V曲线求得终点时耗 去NaOH标准溶液的体积,也可用二级微商法求出△ 2pH/△ V2^0时,相应的NaOH 标准溶液体积,即得出滴定终点。根据标准确溶液的...
2001501005005010015001234567系列1由以上曲线知vep约在600ml左右由内插法求vepvep6008861060088163604ml因为草酸与naoh的反应h2c2o42oh2h2oc2o42所以naoh浓度为cnaoh1522060400828moll152混合酸的测定粗测vmlph051023815258202892542230716351007401127223229细测vmlphphv
Ag，AgCl|HCl(0.1mol/L)|玻璃膜| H2SO4,H3PO4（试液）‖KCl(饱和)|Hg2Cl2,Hg 在滴定过程中，通过测量工作电池的电动势，了解溶液pH值随加入标准碱溶液体积V的变化情况，然后由pH-V曲线或（ΔpH/ΔV）-V曲线求得终点时耗去NaOH标准溶液的体积，也可用二级微商法求出Δ2pH/ΔV2 =0时，相应的NaOH标准...
Which of the following substances is amphoteric? a. H2O(l) b. CO32- ion c. NH4+ ion d. H3PO4 e. NaOH(aq) What is the conjugate base of H_2PO_4^-? a) H_3PO_4 b) H_2PO_4^{2-} c) H_3PO_4^+ d) H_2PO_4 e) HPO_4^{2-} ...
If 38.19 mL of 0.084 M NaOH was dispensed to get to the endpoint of a titration of 25 mL of H3PO4, what was the initial concentration of H3PO4? What is the molarity of a phosphoric acid solution if the solution is 85% by...