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Consider the following reaction: 2NO(2...

Consider the following reaction:
`2NO_(2)(g) rarr 2NO(g)+ O_(2)(g)`
In the figure below, identify the curves `X,Y,` and `Z` associated with the three species in the reaction

A

`X=NO, Y=O_(2), Z=NO_(2)`

B

`X=O_(2), Y=NO, Z=NO_(2)`

C

`X=NO_(2), Y=NO, Z=O_(2)`

D

`X=O_(2), Y=NO_(2), Z=NO`

Text Solution

Verified by Experts

The correct Answer is:
A
The concentration of `X` is increasing hence it is product, while concentration of `Z` decreases therefore it is reactant. The concentration of `Y` increases less than `X` that means production of `Y` is less than `X`. Hence, `Y` must be `O_(2)` and `X` must be `NO` because `2 "mol"` of `NO_(2)` produces `2 "mol"` of `NO` and `1 "mol"` of `O_(2)`. Therefore, `X=NO, y=O_(2)` and `Z=NO_(2)`.
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