Hydrochloric Acid Solution Preparation
- Dilute 85 ml of hydrochloric acid with water to produce 1000 ml.
- Standardize the solution in the following manner.
Hydrochloric Acid Solution Standardization
- Weigh accurately about 1.5 g 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 1M hydrochloric acid is equivalent to 0.05299 g of Na2CO3.
- Calculate the molarity of solution by the following formula:
M = -----------------------------------------
Hydrochloric Acid in ml x 52.99
Also see: Determination of Shelf Life of Solutions in Laboratory
Clear cut matter
ReplyDeletewhy we should heat the solution ?
ReplyDeleteTake hydrochloric acid sample in a 5 ml weighing bottle. Carefully transfer about 1 gm (weighing accurately) into a 100 ml conical flask containing 10 ml distilled water. Titrate with 1(N) sodium hydroxide solution taken in burette using methyl red as an indicator. 1 ml of 1(N) sodium hydroxide = 0.03646 gm. HCl.
ReplyDeleteAssay of HCL (%) = Titre value (ml) x normality NaOH x 3.646/Weight of HCl sample taken (gm)
Can I use above method for Hcl
Can any one explain what is the meaning of this line, 1 ml of 1 M HCL Is equivalent to 0.05299 g of Na2co3
ReplyDeleteIs this using for standardization 1.HCL tromethanine and please share me formula
ReplyDelete