Home
Class 12
CHEMISTRY
3.55g of bleaching powder, when treated ...

3.55g of bleaching powder, when treated with acetic acid and excess of KI liberated Iodine which required 6 ml of 0.5 H Hypo solution. What is the percentage of available `Cl_(2)` ?

Text Solution

Verified by Experts

The correct Answer is:
3
% available chlorine `= (3.55 xx 0.5 xx V )/(W ) = ( 3.55 xx 0.5 xx 6)/( 3.55) = 3.0`
% available `Cl_(2) = 3%`
3.55g of bleaching powder, when treated with acetic acid and excess of KI liberated Iodine which required 6 ml of 0.5 N Hypo solution. What is the percentrage of available `Cl_(2)` ?
Promotional Banner

Similar Questions

Explore conceptually related problems

Bleaching powder when treated with excess of dil. H_(2) SO_(4) liberates

When KI in acidic medium were mixed in 50ml H_2O_2 liberated I_2 requires 20ml of 0.1N hypo. What is strength of H_2O_2 .

One gram of a mixture of KMnO_(4) and K_(2)Cr_(2)O_(7) was treated with excess Kl in acid solution. The liberated iodine requred 200mL of 0.15N hypo for titration. Calculate the pracentage weight of potassium permanganate in the mixture.

0.5 g of organic compound in Kjeldhal's method liberated ammonia, which nutralised 60 ml of 0.1 N H_(2)SO_(4) solution. The percentage of nitrogen in the compound is

All titration which involves the direct titration of Iodine with a reducing agent are grouped under lodimetry. Iodimetry is employed to determine the strength of reducing agent such as sodium thio sulphate I_(2) + 2Na_(2)S_(2)O_(3) rarr 2I^(-)+S_(4)O_(6)^(-) If iodine is liberated as a result of chemical reaction involving oxidation of an idodide ion by a strong oxidizing agent in neutral or acidic medium the liberated iodine is then titrated with reducing agent. This titration is called lodometry. Todometry is used to estimate the strength of oxidizing agent. For example the estimation of Cu^(++) with thiosulphate. Cu^(+ +) +I^(-) Cu_(2)I_(2)+I_(2) , I_(2) +S_(2)O_(3)^(-) rarrS_(4)O_(6)^(-) +I^(-) Starch used as indicator near the end point which form blue colour complex with I_(3)^(-) . The blue colour disappears when When 159.50g of CuSO_4 in a solution is reacted with KI, then the liberated iodine required 100 ml 1 M Na_(2)S_(2)O_3 for complete reaction, then what is the percentage purity of sample used in making the solution.

Iodine titration can be iodemotire or iodimetric depending on using iodine directly or indirectly as an oxidising agent in the redox titration. a) Iodimetric titration in which a standard iodine solution is used as an oxidant and iodine is directly or indirectly titrated against a reducing agent. For example 2CuSO_(4)+4KIrarrCu_(2)I_(2)+2K_(2)SO_(4)+I_(2) b) Iodimetric procedures are used for the determination of strength of reducing agent such as thiosulphates, sulphites, arsenties and stannous chloride etc., by titrating them against standard solution of iodine in a burette. 2Na_(2)S_(2)O_(3)rarr2NaI+Na_(2)S_(4)O_(6) Starch is used as indicator near the end point which form blue colour complex with I_(3)^(-) . The blue colour disappeams when there is no more of free I_(2) . When 319.0 gm of CuSO_(4) in a solution is related with excess of 0.5 M KI solution, then librated iodine required 200 ml of 1.0 M Na_(2)S_(2)O_(3) for complete relation. The percentage purity of CuSO_(4) in the sample is

Iodine titration can be iodemotric or iodimetric depending on using iodine directly or indirectly is an oxidising agent in the redox titration. a. Iodimetric titration in which a standard iodine solution is used as an oxidant and iodine is directly or indirectly titrated against a reducing agent. For example. 2CuSO_(4)+4KJtoCu_(2)I_(2)+2K_(2)SO_(4)+I_(2) b. Iodimetric procedures are used for the datermination of strength of reducing agent such as thiosulphates, sulphites, arsenties adn stanous chloride etc. by titrating them against standard solution of iodine in a burette. 2Na_(2)SO_(3)to2 NaI +Na_(2)S_(4)O_(6) Starch is used as indicator near the end point whilch form blue colour complex with I_(3)^(-) . The blue colour disappeams when there is not more of free I_(2) . When 319.0 gm of CuSO_(4) in a solution is related with excess of 0.5 M KI solution, then librated iodine required 200 ml of 1.0M Na_(2)S_(2)O_(3) for complete relation. The percentage purity of CuSO_(4) in the sample is

20ml of hydrogen peroxide solution is added to excess of acidified KI solution. The iodine so liberated requires 20ml of 0.1M hypo solution. Calculate the molarity and percentage strength of H_2O_2 solution.

The weight of iodine liberated when excess of KI reacts with 500 ml of 1 M H_2O_2 is