What is the maximum percentage of availa...

What is the maximum percentage of available chlorine in a sample of bleaching powder ?

`75%`

`20-25%`

`50-75%`

`35-38%

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The percentage of available chlorine in a commercial sampleof bleaching powder is

Bleaching powder is

Calculate the percentage of available chlorine in a given sample of bleaching powder from the following data : 3.55 g of bleaching powder when treated with acetic acid and excess of KI liberated iodine which required 60 mL of 0.5 N sodium thiosulphate solution.

Calculate the percentage of available chlorine in a sample of 3.55g of bleaching powder which was dissolved in 100mL of water. 25mL of this solution, on treatment with KI and dilute acid, required 20 mL of 0.125 N sodium thiosulphate solution.

Bleaching power is a mixed salt of hydrochloric acid and hypochlorious acid. It has the formula, CaOCI_(2).H_(2)O . It is manuafactured by the action of chlorine on dry slaked lime at 40^(@)C . There is also a view that bleaching power is a mixture [Ca(OCI)_(2)+CaCI_(2).Ca(OH)_(2).H_(2)O] . The amount of chlorine obtained form a sample of bleching power by the treatement with excess of dilute acids or CO_(2) is called a available chlorine. A good sample of bleaching power constains 35-38% of available chlorine. On long standing, it undergoes auto-oxidation and the amount of acvailable chlorine decreases. The estimation of available chlorine is done volumetrically by (a) iodometric method or by (b) aresenite method. In textile industry, the cotton cloth is mainly bleached with the help of bleaching power. The percentage of available chlorine in commercial samples of bleaching poweder is usually between 35% and 38% . The low value is due to

What is the percentage of chlorine in a good sample of bleaching power?

The chemical name of bleaching powder is

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