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ICSE Class 10 Chemistry 2023 Paper

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Question : 25 of 88
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Conversion of ethene to ethane is an example of ............. [hydration / hydrogenation]
Solution:  
Hydrogenation
Conversion of ethene to ethane is an example of addition of hydrogen. This reaction is carried out in the presence of Ni\mathrm{Ni} or pt or pd catalyst at 200−300∘ C200-300^{\circ}\,\text{C}
CH2=CH2(g)Ethene+H2(g)→200−300∘ CNi/Cd\underset{\text{Ethene}}{\mathrm{CH}_2=\mathrm{CH}_2(g)} + \mathrm{H}_2(g) \xrightarrow[200-300^{\circ}\,\text{C}]{\mathrm{Ni}/\mathrm{Cd}} CH3−CH3(g)Ethane\underset{\text{Ethane}}{\mathrm{CH}_3-\mathrm{CH}_3(g)}
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