1. Tardigrade
  2. Question
  3. Chemistry
  4. Statement I: Platinum and palladium catalyse the reaction at room temperature. Statement II: Nickel catalyses the reaction at relatively higher temperature and pressure.

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Q. Statement I : Platinum and palladium catalyse the reaction at room temperature.
Statement II : Nickel catalyses the reaction at relatively higher temperature and pressure.

Hydrocarbons

Solution:

Dihydrogen gas adds to alkenes and alkynes in the presence of finely divided catalysts like platinum, palladium or nickel to form alkanes. These metals adsorb dihydrogen gas on their surfaces and activate the hydrogen-hydrogen bond. Platinum and palladium catalyse the reaction at room temperature but relatively higher temperature and pressure are required with nickel catalyst.