IIT JEE , AIEEE Forum - Chemistry , Organic Chemistry

shrutikas

what is this reagent used for.
pls tel me the rxns in which it is used.

Agni2

It is a reduing agent....

heresamit

hey red p +hi is one of the strongest reducing agent
it is specifically used in organic reactions i.e the ones in which we wish to convert a
ketone or alcohol or aldehyde directly to the parent hydrocarbon.
anything taken with red p +hi will directly give u the hydrocarbon
eg ch3oh will get converted to ch4 so will ch3cho get converted to c2h6

drish

yeah it is a reducing agent .

eg. it converts cyclo propane -----------> n-propane.

to reduce the steric effect.

srinathmurthy

See , HI is used as a reducing agent ,so It gets oxidized to I_{2 . ^{this I2 is a very good oxidizing agetn . This may react with , the reactants and it may lead ot a very diff .reacn.}}

_{^{So , red P is added which reacts with I2 to give back , HI ,}}

_{^{The reacn . goes like this. (this is usually in aq . mdm.)}}

_{^{P + H2O ------> P2O5 + PH3}}

_{^{PH3 + I2 --------> HI +P}}

_{^{Thus I2 is prevented from reacting wiht , the reactants.}}

_{^{I'm not sure with the reacn.s (unbalanced) , Please coorect if wrong, I verify also later .But it definitely prevent s I2 from reacting with teh reactant mix.}}

_{^{That's 4 sure.}}

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