Chemistry-
General
Easy
Question
A third group is least likely to enter between two groups in the meta relationship. This is the result of steric hindrance and increases in importance with the size of the groups on the ring and with the size of the attacking species.
When a Meta-directing group is meta to an ortho-para directing group, the incoming group primarily goes ortho to the meta directing group rather than para.
- (A) , (B)
The correct answer is: (A) , (B)
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Iodine Titration
All such titration which involves the direct titration of Iodine with a reducing agent are grouped under Iodimetry. Iodimetry is employed to determine the strength of reducing agent such as sodium those sulphate
I2 + Na2S2O3 ¾→ I– + null
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For example the estimation of Cu++ with thiosulphate.
Cu++ + I– ¾→Cu2I2 + I2
I2 + null
Starch used as indicator near the end point which form blue colour complex withnull. The blue colour disappears when there is no more of free I2.
100 ml of 0.1 N hypo decolourised iodine by the addition of x g of crystalline blue vitriol to excess of KI. The value of x is
Iodine Titration
All such titration which involves the direct titration of Iodine with a reducing agent are grouped under Iodimetry. Iodimetry is employed to determine the strength of reducing agent such as sodium those sulphate
I2 + Na2S2O3 ¾→ I– + null
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For example the estimation of Cu++ with thiosulphate.
Cu++ + I– ¾→Cu2I2 + I2
I2 + null
Starch used as indicator near the end point which form blue colour complex withnull. The blue colour disappears when there is no more of free I2.
100 ml of 0.1 N hypo decolourised iodine by the addition of x g of crystalline blue vitriol to excess of KI. The value of x is
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