and bubble it through CO2-free water. The "wet" nitrogen gas is then CAREFULLY blown across solid sodium metal on a platinum screen. The reaction of H2O and Na metal produces carbonate-free NaOH, and of course H2 gas. The concentrated NaOH falls into a platinum collecting dish....
Determine the volume in milliliters of a 0.188 M NaOH solution needed to neutralize a 275 mL solution of 0.125 M HCl and 0.250 M H2SO4. What is the concentration (in M) of a NaOH solution if a titration experiment required 24.3...
a本实验是为了培养学生通过用NaOH溶液测定盐酸-氯化铵混合溶液中各组分的含量,掌握配制NaOH标准溶液的方法,学会用甲醛法进行弱酸的强化,掌握分步滴定的原理与条件。HCl—NH4Cl混合溶液中,HCl是强酸,可以直接滴定;NH4+(cKa 正在翻译,请等待...[translate]
The equivalence point is an important point in the progress of any acid-base titration experiment. Its meaning is always the same, regardless of the relative strength of the titrant and analyte reactants. Equivalence requires the reactants to be combined in the...
Calculate the pH of the solution after combining 10.0 mL of 0.35 M HF and 15.0 mL of 0.30 M NaOH. Calculate the pH of the solution when the following substances are added together: (a) 200 mL of 0.1 M NaOH and 8 mL of 0.25 M Acetic Acid. (b)...
The mixture comprised 42 mL SSF (simulated salivary fluid) electrolyte stock solution, 6 mL α-amylase solution (250 U/mL), 0.3 mL 0.3 mol/L CaCl2, and 11.7 mL water. The reaction mixtures were shaken for 10 min. 2.3.2. Gastric phase To each of the reaction mixtures from the oral ...
If 35 mL of H_2SO_4 is titrated to the equivalent pint with 45 mL of 0.30M NaOH, what is the molarity of the H_2SO_4 before and after the reaction? 15.0 ml of a 0.1075 M NaOH solution are required to neutralize 15.00 mL of...
H2and OH−(Eq.2). After being washed with brine, the Na0.44−xMnO2(i.e. desodiated Na0.44MnO2, which is formed in Step 1) is used as the cathode in Step 2 for the Cl2evolution, where the anodic Cl2evolution reaction on the CER electrode (Eq.3) is coupled to the cathodic ...
2.The Effection of CO_2 in HCl-NaOH Titration System;CO_2对HCl-NaOH滴定体系的影响 3.Research on the Experimental Conditions of Absorbing and Preserving Chlonine with the NaOH Solution;用NaOH溶液吸收保存Cl_2实验条件的研究 4.Melioration to the Experiment of the Reaction between CO_ 2 and NaOH...
6.The Effection of CO_2 in HCl-NaOH Titration System;CO_2对HCl-NaOH滴定体系的影响 7.Research on the Experimental Conditions of Absorbing and Preserving Chlonine with the NaOH Solution;用NaOH溶液吸收保存Cl_2实验条件的研究 8.Melioration to the Experiment of the Reaction between CO_ 2 and NaOH...