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Stoichiometry

A carbon comp...

Question

A carbon compound 'P' on heating with excess conc. $H_{2} S O_{4}$ forms another carbon compound 'Q' which on addition of $H_{2}$ in the presence of nickel catalyst forms a saturated carbon compound 'R'. One molecule of 'R' on combustion forms two molecules of $C O_{2}$ and 3 molecules of $H_{2} O$ . Identity P, Q, R and write chemical equation?

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Solution

$R = C_{2} H_{6} H_{2} \leftarrow - N I C H_{2} = C H_{2}$ or $C H \equiv C H$
{Q} {Q}
(Refer to Image)
$(P = C H_{3} C H_{2} O H)$ preferred.

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