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Standard XII

Chemistry

Halogenation of Benzene

When equal vo...

Question

When equal volumes of ethene and hydrogen at constant pressure are passed through catalyst maintained at 300⁰C, an addition reaction takes place. The catalyst used is ______.

Cobalt

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Iron (II) oxide

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Vanadium pentoxide

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Nickel

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Solution

The correct option is D Nickel
Ethene reacts with hydrogen in the presence of a finely divided nickel catalyst at a temperature of about $300^{\circ} C$ to give ethane.

$C H_{2} = C H_{2} (g) + H_{2} (g) N i - \to C H_{3} - C H_{3} (g)$

The hydrogenation or addition reaction holds true for any alkene in the presence of nickel catalyst, at higher temperatures.

However, the hydrogenation reaction can also be carried out by using platinum or palladium as a catalyst.

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Similar questions

Equal volumes of ethene and hydrogen at same temperature and pressure are passed through catalyst maintained at 300⁰C, an addition reaction takes place. The catalyst used is:

0.15

mole of

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along with a catalyst, so that the following reaction takes place.

C O (g) + 2 H_{2} (g) C_{6} H_{5} C N (i) C_{6} H_{5} M g B r [e x c e s s], H_{2} O, H^{+} (i i) Z n - H g, H C l - ----------------------------- \to C H_{3} O H (g)

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