Now You Know Determination of Strength of HCl
Monday 4 February 2019
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Determination of Strength of HCl
Rofiquzzaman Raju
Chittagong Textile Engineering College
Contact: 01714419781
Email: rtextile.finance@gmail.com
Chittagong Textile Engineering College
Contact: 01714419781
Email: rtextile.finance@gmail.com
Introduction
Determination of chemical strength of HCl is important for textile industry. It he strength of HCl is not proper then the every process on textile is not proper. Titration is the best method for determination of strength of HCl. In this method 0.1 N NaOH is used for titration.
 |
| Strength test of HCl |
- To know about how determined the strength of HCl.
- To know about the titration process.
- To know about the solution making.
- To know about the end point of this testing.
- Beaker
- Pipette
- Stirrer
- Graduate cylinder
- Electronic balance
- Burette
- HCl
- 0.1 N NaOH
- And Indicator ( Phenolphthalein)
4 ml HCl is taken
↓
Then it is diluted with 500 ml water ↓
From that solution 25 ml is taken
↓
After that 2-3 drops of indicator is added ↓
Then it is taken in Conical flask. Then this sample solution is treated with 0.1 N NaOH
End Point: The end point is determined when the permanent pink color solution stay.
Calculation for Result
Molecular equivalent weight of HCl = 36.5 gm
So, 1000 ml Molecular equivalent weight is 36.5
1 ml molecular equivalent weight is = 36.5/1000 = 0.0365 gm
In 500 ml water the amount of sample is 4 ml
So, 25 ml of water the amount of sample is = ( 4 X 25)/500 = 0.20
Normality of NaOH is 0.1 N
And volume used of KMnO4 is 24.5 & 25.6
 |
Required Amount of NaOH | Strength of HCl % |
24.5 & 24.6 | 44.712 & 44.895 |
23.7 & 22.3 | 43.252 & 40.697 |
24 & 23.2 | 43.8 & 42.34 |
23.8 & 24.1 | 43.435 & 43.982 |
23.7 & 23.5 | 43.252 & 42.887 |
From above results, we can say that the strength of HCl of different persons results have been obtained near to 43.5% and my results is 44.712 & 44.895 . we have done experiment manually so something can be inaccurate measurement of pipette or burette reading. And at last, we can say that the strength of HCl is 44 %.
Conclusion
At last we can say that, how to determine the strength of HCl, is known by this experiment. Knowledge is gained from this experiment which is very helpful in our practical life.
Conclusion
At last we can say that, how to determine the strength of HCl, is known by this experiment. Knowledge is gained from this experiment which is very helpful in our practical life.