This relates to the pharmaceutical use of KOH, in forms of topical, oral drugs or intravenous drip, prepared for treating high blood uric acid, especially gout. The external application refers to footbath in soaking solution or embrocation on attack position. The action of the drugs is also ...
What is the pH at the equivalence point in the titration of a 22.1 mL sample of a 0.390 M aqueous acetic acid solution with a 0.399 M aqueous potassium hydroxide solution? You have a 5 M NaCl stock solution. a) How much NaCl (in ...
How many grams of sodium chloride are needed to make 0.60 L of 2.3 M sodium chloride solution? You need to prepare a 0.25 M solution of NaCl, but you only need 50 mL of this solution. How many grams of NaCl would you need?
To solve the above technical problem, a technical solution adopted by the present invention is: to provide a method for preparing Dimethyl acetylenedicarboxylate, including the following steps: (1) Dissolve 2,3-dibromosuccinic acid in methanol, add concentrated sulfuric acid dropwise to the reaction ...
To prepare alkyl isocyanides from primary amines, we can utilize the Carbylamine reaction. Here’s a step-by-step breakdown of the process:Step 1: Understand the Reactants - Primary Amines: These are compounds
to generate clinker whose main phases are calcium orthosilicate and sodium (potassium aluminate); the aluminic acid in the clinker is dissolved with dilute sodium hydroxide solution Sodium (potassium) and calcium orthosilicate are separated as filter residues for the production of cement; sodium ...
Re: How come water and potassium give potassium hydroxide and not potassium oxide? «Reply #1 on:September 27, 2019, 02:11:38 AM » K2O exists as solid only If you put it in water it reacts immediately with water to give KOH because it is a strong basic oxide. ...
Mixing the intermediate product with potassium hydroxide at a mass ratio of 1:2, the mixture is heated in two steps in an OTF-1200X tube furnace with argon. The first step was increased to 400℃ at 10℃ min-1 and kept for 30 min. In the second step, the temperature rose by 10℃ ...
Explain why 25% NaOH solution is used in the polymerization reaction (where adipoyl chloride and 1,6-hexanediamine monomers polymerize to form nylon-6,6) in an experiment. Describe how to prepare a solution of sulphuric acid in the laboratory. ...
To solve the above problems, CN105254611B discloses a method for preparing benzothiophene-2-carboxylic acid. In a high-pressure vessel, 3-mercaptoxanthone is used as the raw material, and tetrabutylammonium bromide is used as the catalyst in an alkaline solution. The pressure inside the high-pre...