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Add some mildly acid Iodide to the hypo chlorite solution.

Titrate the formed Iodine-Iodide complex (I3-) with disodium thiosulfate until the starch (added at almost the end) color (black-blue with Iodine-Iodide complex) is disappeared.

  1. ClO- + Cl- + 2 H+ --> 'Cl2'available + H2O
  2. 'Cl2'available + 3 I- --> 2 Cl- + I3-
  3. I3- + 2 S2O32- --> 3 I- + S4O62-

(There are official -standard- Analytical Methods and Testing Procedures available on this subject).

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Q: Estimation of available chlorine by iodometry?
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Does it matter what brand of chlorine you use as long as it contains the same available chlorine?

If the available chlorine is the same percentage then they are the same.


Can you swim in pool hat has a normal chlorine level but the free chlorine level is high?

There is 3 measurements of chlorine in a pool or spa. Total chlorine, combined chlorine, and free available chlorine. Free available chlorine is the good chlorine that is active in the pool killings germs and algae. Combined chlorine is chlorine is basically chlorine that was once active but has killed germs or bacteria and is now inactive in the pool. Total chlorine is free available and combined chlorine added together. If your combined chlorine is higher than free available chlorine then the water needs to be shocked to eliminate the combined chlorine. But be careful here. If you don't reach what's called break point you will only add to the combined chlorine. There are products on the market which will only remove combined chlorine without effecting your free available chlorine if you are unsure about reaching breakpoint. Hope this helps.


What is free chlorine in a pool?

Free Chlorine is the Chlorine which is free to do its work in the pool, as opposed to Combined Chlorine which is chlorine that has combined with contaminants and is tied up and ineffective as a sanitizer in the pool. Sometimes you will see it abbreviated as FAC, which stands for Free Available Chlorine.


What is meant by available chlorine in bleaching powder?

Usually it relates to hypochlorites content in the product. Available chlorine is the quantity of chlorine that can hypothetically be produced by reaction of bleaching powder with hydrochloric acid. Greater the available chlorine is - greater oxidation ability the bleaching powder has. For example, available chlorine 5% means that fixed amount of something can be oxidized by (100/5)X=20X grams of bleaching powder and the same can be done with only X grams of pure chlorine.


What is total residual chlorine?

Total Residual Chlorine (TRC) is the total of free available residual chlorine and combined (bound) residual chlorine. The amount of measurable chlorine remaining after treating water with chlorine i.e. amount of chlorine left in water after the chlorine demand has been satisfied

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What are the indicators in iodometry?

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Does it matter what brand of chlorine you use as long as it contains the same available chlorine?

If the available chlorine is the same percentage then they are the same.


What is the percentage of available chlorine bleaching powder?

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Can you swim in pool hat has a normal chlorine level but the free chlorine level is high?

There is 3 measurements of chlorine in a pool or spa. Total chlorine, combined chlorine, and free available chlorine. Free available chlorine is the good chlorine that is active in the pool killings germs and algae. Combined chlorine is chlorine is basically chlorine that was once active but has killed germs or bacteria and is now inactive in the pool. Total chlorine is free available and combined chlorine added together. If your combined chlorine is higher than free available chlorine then the water needs to be shocked to eliminate the combined chlorine. But be careful here. If you don't reach what's called break point you will only add to the combined chlorine. There are products on the market which will only remove combined chlorine without effecting your free available chlorine if you are unsure about reaching breakpoint. Hope this helps.


What is free chlorine in a pool?

Free Chlorine is the Chlorine which is free to do its work in the pool, as opposed to Combined Chlorine which is chlorine that has combined with contaminants and is tied up and ineffective as a sanitizer in the pool. Sometimes you will see it abbreviated as FAC, which stands for Free Available Chlorine.


How can you change combined chlorine to free available chlorine?

Just shock it to break point and your at free chlorine.


What is available chlorine?

The quantity of chlorine released by a bleaching powder when treated with acid.


What is meant by available chlorine in bleaching powder?

Usually it relates to hypochlorites content in the product. Available chlorine is the quantity of chlorine that can hypothetically be produced by reaction of bleaching powder with hydrochloric acid. Greater the available chlorine is - greater oxidation ability the bleaching powder has. For example, available chlorine 5% means that fixed amount of something can be oxidized by (100/5)X=20X grams of bleaching powder and the same can be done with only X grams of pure chlorine.


What blood test is available that gives an accurate estimation of radiation dose?

lymphocyte cytogenetics


Difference between iodometry and iodimetry?

When an analyte that is a reducing agent is titrated directly with a standard iodine solution, the method is called "iodimetry". When an analyte that is an oxidizing agent is added to excess iodide to produce iodine, and the iodine produced is determined by titration with sodium thiosulfate, the method is called "iodometry".


Use of silver nitrate in chloride estimation?

The reaction is: AgNO3 + NaCl = AgCl + NaNO3 AgCl is a withe precipitate used to gravimetrically determination of chlorine or silver.