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  • 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 _________.O

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 _________.
 

Answers (1)

best_answer

We know, 

448 ml of vapour of STP = 20 m moles

Thus, 20 m moles of A weigh 1.53 g

\mathrm{\therefore 1\: mole\, of\: A\: weighs\; \frac{1.53}{20}\times 10^{3}\ g}
                                           \mathrm{= 76. 5\ g}

Now, since aldehyde is formed on ozonolysis, the compound can be assumed as \mathrm{C_{n}H_{2n-1} Cl}

\mathrm{\therefore 12n+1\left ( 2n-1 \right )+35.5= 76. 5}

\mathrm{\Rightarrow 14n= 42}

\mathrm{\Rightarrow n= 3}

Thus, the compound is \mathrm{C_{3}H_{5}Cl}.

Hence, the answer is 3

Posted by

sudhir.kumar

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