Verified Solution • 2025–26 Session moderate

QJEEM21Cha3b6: JEE Main 2021 Chemistry - Class 12 JEEM21Cha3b6 Solution: A chloro compound "A". (i) forms aldehydes on ozonolysis…

A chloro compound "A".

(i) forms aldehydes on ozonolysis followed by the hydrolysis.

(ii) when vaporized completely 1.53 g of A, gives 448 mL of vapour at STP.

The number of carbon atoms in a molecule of compound A is ___________.

Step-by-Step Verified Solution

448 ml of A ⇒\Rightarrow 1.53 gm A

22400 ml of A ⇒\Rightarrow 1.53448{{1.53} \over {448}} ×\times 22400 gm A = 76.5 Agm

H3CHC−CH−ClIt has 3 carbon atoms⟶Zn/H2OO3CH3−CH=OAldehyde\mathop {{H_3}CHC - CH - Cl}\limits_{It\,has\,3\,carbon\,atoms} \mathrel{\mathop{\kern0pt\longrightarrow}\limits_{Zn/{H_2}O}^{{O_3}}} \mathop {C{H_3} - CH = O}\limits_{Aldehyde}

& MM is 36 + 5 + 35.5 = 76.5

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