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Question
Catalytic hydrogenation of which of following will yields isopentane?
Catalytic hydrogenation of which of following will yields isopentane?
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Solution
The correct option is A CH3CH=C(CH3)2
In a hydrogenation reaction, two hydrogen atoms are added across the double bond of an alkene, resulting in a saturated alkane. Hydrogenation of a double bond is a thermodynamically favorable reaction because it forms a more stable (lower energy) product.
Common catalysts used are insoluble metals such as platinum in the form PtO2. With the presence of a metal catalyst, the H-H bond in H2 cleaves, and each hydrogen attaches to the metal catalyst surface, forming metal-hydrogen bonds.
CH3−CH=C(CH3)2+H2⟶CH3−CH2−CH(CH3)2whichisiso−pentane
In a hydrogenation reaction, two hydrogen atoms are added across the double bond of an alkene, resulting in a saturated alkane. Hydrogenation of a double bond is a thermodynamically favorable reaction because it forms a more stable (lower energy) product.
Common catalysts used are insoluble metals such as platinum in the form PtO2. With the presence of a metal catalyst, the H-H bond in H2 cleaves, and each hydrogen attaches to the metal catalyst surface, forming metal-hydrogen bonds.
CH3−CH=C(CH3)2+H2⟶CH3−CH2−CH(CH3)2whichisiso−pentane
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