Question

Find the molecularity of the reaction H2 +1/2O2=H2O

Answer 1

Answer:

H2+1/2O2=H2O

Explanation:

H=68.32 kcal

Answer 2

Answer:

The molecularity of the given reaction is trimolecular reaction .

Explanation:

• Molecularity

In the rate determining step , the number if reacting species participate to form product is known as the molecularity of the reaction.

Rate determining step should have to be the slowest step in the reaction

The given reaction:

$2H_{2}+O_{2}$  →  $2H_{2}O$

The molecularity $= 1+2=3$

Therefore the given reaction is trimolecular.