Limit Test For Chloride | How to Do Limit Test for Chloride | क्लोराइड का लिमिट टेस्ट कैसे करते हैं

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LIMIT TEST FOR CHLORIDES
Limit test is defined as a quantitative or semiquantitative test designed to identify and control a small amount of inorganic impurities which is likely to be present in the substance. Limit test is nothing but to identify impurities in the substance and compare with the standard.
Apparatus Required
Nessler cylinders, Glass rod, stand, Beaker, Pipettes
Chemicals Required
Dilute Nitric acid (10%) Silver nitrate (5%) Sodium chloride
Principle
It is based upon the chemical reaction between silver nitrate and soluble chlorides in the presence of dilute nitric acid to give opalescence of silver chloride. If the Opalescence produced is compared with the standard solution. If the opalescence in the sample is less than the standard, it passes the test. If it is more than the standard, it fails the test.
Procedure
Test sample
1. Specific weight of the compound is dissolved in water or solution is prepared as directed in the pharmacopoeia and transferred in Nessler cylinder.
2. Add 10ml of dilute nitric acid
3. Dilute to 50ml in Nessler cylinder
4. Add 1ml of AgNO3 solution
5. Keep aside for 5 min
6. Observe the Opalescence/Turbidity
Standard compound
1. Take 1ml of 0.05845 % W/V solution of sodium chloride in Nessler cylinder.
2. Add 10 ml of dilute nitric acid
3. Dilute to 50ml in Nessler cylinder
4. Add 1ml of AgNO3 solution
5. Keep aside for 5 min
6. Observe the Opalescence/Turbidity
Observation:
The opalescence produces in sample solution should not be greater than the standard solution. If opalescence produces in a sample solution is less than the standard solution, the sample will pass the limit test of chloride and visa versa.
Reasons:
Nitric acid is added in the limit test of chloride to make solution acidic and helps silver chloride precipitate to make solution turbid at the end of process.
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[@jadavchirag0172]

Nice video hai
Limit test ka
Ase hi Help kar te raho
Thank you 🙏🙏🙏🙏🙏🙏

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The limit test chloride which chloride ions in react which silver nitrate in pregence of naitric acid in which reduces form silver chloride in form white ppt and realse nitric acid 👍👍👍👍👍

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Kindly provide the information about how the silver nitrate solution and test solution will be prepared

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Dhiraj D.P Ok. We will try to make it soon. Please be in touch. Thank you

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Add 0.5g nahco3 in 10 ml of water

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Mam opalescence and turbidity me kya difference hai
Hum test me turbidity dekhate hai ya opalescence please reply 😊

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Sorry for the issue. Soon we will try to provide english version

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Test solution made by which solution?

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Hi,mam sorry for disturb to you but you hasn't explained which test solution are using in limit test of chloride

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Why add water before the add of Silver nitrate in limit test for chloride?????

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Test of chloride in DM water

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In chloride we see the Opalecenc not turbidity

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@@nehakashyap1539 test solution - specific ammount of substance dissolved in nesslers cylinder as directed in pharmacopoeia

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Isnt the observation based on opalascence for chloride

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Limit test

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