Master NCEA Level 3 Organic Chemistry Reaction Schemes. Prepare with multiple choice questions, complete with hints and detailed explanations. Ace your exam with our comprehensive tools!

Multiple Choice

Alkene hydrogenated with H2 and a nickel catalyst at heat yields which product?

Catalytic hydrogenation of alkenes over a nickel catalyst adds hydrogen across the carbon–carbon double bond, converting it to a single bond and giving a saturated hydrocarbon. The nickel surface splits H2 into two hydrogen atoms, which attach to the two carbons of the double bond. No oxygen or other heteroatoms are introduced, so alcohols, ethers, or carboxylic acids aren’t formed under these conditions. The product is an alkane.

Catalytic hydrogenation of alkenes over a nickel catalyst adds hydrogen across the carbon–carbon double bond, converting it to a single bond and giving a saturated hydrocarbon. The nickel surface splits H2 into two hydrogen atoms, which attach to the two carbons of the double bond. No oxygen or other heteroatoms are introduced, so alcohols, ethers, or carboxylic acids aren’t formed under these conditions. The product is an alkane.