Methanolic Hydrochloric Acid Solution Preparation
- Take 40 ml of water in a 1000 ml volumetric flask.
- Slowly add 43 ml of hydrochloric acid.
- Cool and add methanol to volume.
- Standardize the solution in the following manner.
Methanolic Hydrochloric Acid Solution Standardization
- Weigh accurately about 800 mg of anhydrous sodium carbonate, previously heated at about 270°C for 1 hour.
- Dissolve it in 100 ml of water and add 0.1 ml of methyl red solution.
- Add the acid slowly from a burette, with constant stirring, until the solution becomes faintly pink.
- Heat the solution to boiling, cool and continue the titration.
- Heat again to boiling and titrate further as necessary until the faint pink color is no longer affected by continued boiling.
- 1 ml of 0.5 M hydrochloric acid is equivalent to 0.02650 g of Na2CO3.
- Calculate the molarity of solution by the following formula:
Na2CO3 in mg
M = --------------------------
M = --------------------------
HCl in ml x 26.50
Also see: Determination of Shelf Life of Solutions in Laboratory
Also see: Determination of Shelf Life of Solutions in Laboratory
sir i want to know how water is used to make methanolic HCl and if i want to prepare 0.1N methanolic HCl what will be the procedure for preparation and its standardization. please reply
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