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HC-=CHunderset("under pressure")overset(...

`HC-=CHunderset("under pressure")overset(Heated)rarr(A)overset(O_3//Red.)rarrGlyo xal only`.
Vapour density of `(A)=4.643gI^(-1)` at STP. On catalytic hydrogenation, `0.2gm` of (A) consumed `172 ml` of `H_2` at STP. What is the structure of (A)?

Text Solution

Verified by Experts

`Mw=(dRT)/(P)=(4.63xx0.082xx273)/(1 atm)=104`
`0.2gm of Aimplies172 ml` of `H_2`
`104 gm` of `Aimplies(172)/(0.2)xx104 ml` of `H_2`
`=(172xx104)/(0.2xx22400)mol` of `H_2=4 mol` of `H_2`
`implies` (4 double bonds)
`4(HC-=CH)rarr(CH-=CH)_4`
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