MHT CET202519 Apr 2025Morning ShiftChemistryChemical KineticsActual
For the reaction, NO _ 2( ~g ) + CO _ ( g ) NO _ ( g ) + CO _ 2( ~g ) , rate of formation of NO _ ( g ) is Y ~mol~ dm ⁻³ ~s ⁻¹ . Find the rate of disappearance of CO _ ( g ) .
Options
- A( Y ~mol~ dm ⁻³ ~s ⁻¹ )
- B(2 Y ~mol~ dm ⁻³ ~s ⁻¹ )
- C( Y 2 ~mol~ dm ⁻³ ~s ⁻¹ )
- D( 3 2 Y ~mol~ dm ⁻³ ~s ⁻¹ )
Correct answer
A. ( Y ~mol~ dm ⁻³ ~s ⁻¹ )
Step-by-step solution
The balanced reaction is NO _ 2( g ) + CO _ ( g ) NO _ ( g ) + CO _ 2( g ) . For a reaction with all stoichiometric coefficients equal, the rate is expressed as Rate = - d[ NO ₂] dt = - d[ CO ] dt = + d[ NO ] dt = + d[ CO ₂] dt . Given that d[ NO ] dt = Y , mol , dm ⁻³ , s ⁻¹ , the rate of disappearance of CO is - d[ CO ] dt = Y , mol , dm ⁻³ , s ⁻¹ . The correct answer is A .