Assertion: Transition metals and their complexes show catalytic activity. Reason: The activation energy of a…

Assertion: Transition metals and their complexes show catalytic activity.

Reason: The activation energy of a reaction is lowered by the catalyst.

  1. Assertion is true. Reason is true and Reason is the correct explanation for Assertion
  2. Assertion is true. Reason is true but Reason is not the correct explanation for Assertion
  3. Assertion is true but Reason is false
  4. Assertion is false but Reason is true

Solution

The transition metals and their compounds are known for their catalytic activity. This activity is ascribed to their ability to adopt multiple oxidation states and to form complexes. Catalysts at a solid surface involve the formation of bonds between reactant molecules and atoms of the surface of the catalyst (first row transition metals utilise 3d and 4s electrons for bonding). This has the effect of increasing the concentration of the reactants at the catalyst surface and also weakening of the bonds in the reacting molecules (the activation energy is lowering).

Asked in: AP EAMCET 2022 (04 Jul Shift 2)

Practice more Transition and Inner Transition Elements questions on Aicharya