MCQ
If hydrogen and oxygen are mixed and kept in the same vessel at room temperature, the reaction does not take place to form water because:
  • A
    Activation energy for the reaction is very high at room temperature.
  • B
    Molecules have no proper orientation to react to form water.
  • C
    The frequency of collisions is not high enough for the reaction to take place.
  • D
    No catalyst is present in the reaction mixture.

Answer

  1. Activation energy for the reaction is very high at room temperature.

Explanation:

Activation energy = It is defined as the least possible amount of energy (minimum) which is required to start a reaction or the amount of energy available in a chemical system for a reaction to take place.

The activation energy for the water formation reaction is very high at room temperature due to this reaction does not take place,

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