硫酸质量分数的测定 应用资料

硫酸质量分数的测定 应用资料将硫酸试样转移到装有纯水的烧杯中并冷却至室温后，用0.5mol/L氢氧化钠滴定至终点，即滴定曲线上的最大拐点。硫酸的浓度是根据氢氧化钠的滴定体积来计算的。KGM KYOTO ELECTRONICSMANUFACTURING CO.，LTD.TIQ-97009enL Application Memo Quantification of Sulfuric Acid 1.Overview After test sample of sulfuric acid is transferred to a beaker with pure water and cooled to room temperature， titrate the sample with 0.5mol/L sodium hydroxide up to the endpoint， which is the maximum inflexion on the titration curve. The concentration of sulfuric acid is calculated from the titration volume of sodium hydroxide. 2. Apparatu s Main unit Automatic potentiometric titrator (preamplifier STD) Electrode pH glass electrode Ceramic reference electrode Temperature compensation electrode 3.Reagents Titrant 0.5mo1/L sodium hydroxide solution Solvent Pure water 4. Example Sample Titer Sulfuric acid (g) (mL) (%) 1 0.5135 20.4765 97.78 2 0.5112 20.3905 97.80 3 0.5094 20.3221 97.82 4 0.5076 20.2579 97.86 Average 97.82 SD 0.03 RSD(%) 0.03 Please feel free to contact us for any further information. Kyoto Electronics Manufacturing Co.， Ltd. Overseas Sales & Marketing Sect.