QJEEM19Ch4696: JEE Main 2019 Chemistry - Class 12 JEEM19Ch4696 Solution: NO 2 required for a reaction is produced by the decomposition…

Question

Verified Solution • 2025–26 Session moderate

NO₂ required for a reaction is produced by the decomposition of N₂O₅ in CCl₄ as per the equation,
2N₂O₅(g)

\to

4NO₂(g) + O₂(g).
The initial concentration of N₂O₅ is 3.00 mol L^–1 and it is 2.75 mol L^–1 after 30 minutes. The rate of formation of NO₂ is :

Accepted Answer

Rate of disappearance of N₂O₅ =

- {{\Delta \left[ {{N_2}{O_5}} \right]} \over {\Delta \left[ t \right]}}

=

- {{\left[ {2.75 - 3} \right]} \over {30}}

=

+ {1 \over {120}}

mol L^-1 min^-1

Rate of formation of NO₂ =

+ {{\Delta \left[ {N{O_2}} \right]} \over {\Delta \left[ t \right]}}

As

- {1 \over 2}{{\Delta \left[ {{N_2}{O_5}} \right]} \over {\Delta \left[ t \right]}} = + {1 \over 4}{{\Delta \left[ {N{O_2}} \right]} \over {\Delta \left[ t \right]}}

\Rightarrow

{{\Delta \left[ {N{O_2}} \right]} \over {\Delta \left[ t \right]}}

=

+ {1 \over {120}} \times {4 \over 2}

= 0.01667 = 1.667 × 10^–2 mol L^–1 min^–1

Step-by-Step Verified Solution