Home
Class 11
CHEMISTRY
The equivalent of iodine in the reaction...

The equivalent of iodine in the reaction `2Na_(2)S_(2)O_(3)+I_(2)rarr 2NaI+Na_(2)S_(4)O_(6)` is
[M is molecular weight] 

A

M

B

`M//2`

C

`M//3`

D

2M

Text Solution

Verified by Experts

The correct Answer is:
B

`I_(2)rarrI^(-)` implies n-factor = 2 implies `E=(M)/(2)`
Promotional Banner

Similar Questions

Explore conceptually related problems

The equivalent weight of glucose in the reaction C_(6)H_(12)O_(6)+6O_(2)rarr 6CO_(2)+6H_(2)O is [M is molecular weight]

The equivalent weight of Hypo in the reaction [M = molecular weight] 2Na_(2)S_(2)O_(3)+I_(2)rarr2NaI+Na_(2)S_(4)O_(6) is

The equivalent weight of hypo in the reaction [M is molecular weight] 2Na_(2)S_(2)O_(3)+I_(2)rarr2NaI+Na_(2)S_(4)O_(6) is

The equivalent weight of Hypo in the reaction Na_(2)S_(2)O_(3)+Cl_(2)+H_(2)OrarrNa_(2)SO_(4)+2HCl+S is [M=Mol. Wt]

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

The reaction of I, with Na_(2)S_(2)O_(3) gives Nal and

In the redox reaction 2S_(2)O_(3)^(2-)+I_(2) rarrS_(4)O_(6)^(2-)+2I^(-)