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Question

Now, two reactions are given to Karthik and Arun one each, to find the molecularity of the reaction. Considering that both reactions are elementary.
Reaction (A) is NH4NO2N2+2H2O
Reaction (B) is 2HIH2+I2
Karthik got the answer as 2 and Arun got answer as 1, which are correct by the way. Can you tell which reactions are given to Karthik and Arun?

A
Karthik – Reaction A, Arun reaction B
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B
Arun – Reaction A, Karthik Reaction B
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Solution

The correct option is B Arun – Reaction A, Karthik Reaction B
Reaction A is NH4NO22H2O
Here only one molecule NH4NO2 is decomposing into products as no other reactants are participating, the molecular is 1.
And for Reaction B
2HIH2+I2

2HI molecules colliding each other to form products. As it is given that is an elementary reaction molecularity is 2.

So Karthik got Reaction B and Arun got Reaction A.

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