NTA Abhyas NEET2020ChemistryChemical KineticsPractice
The gaseous reaction A g ⟶ 2 B g + C g is found to be first order with respect to A . If the reaction is started with P A = 90 t o r r the pressure after 10 m i n is found to be 180 t o r r . The rate constant of the reaction is
Options
- A1.15 × 10 − 3 s − 1
- B2.30 × 10 - 3 s - 1
- C3.45 × 10 - 3 s - 1
- D4.60 × 10 - 3 s - 1
Correct answer
A. 1.15 × 10 − 3 s − 1
Step-by-step solution
A g ⟶ 2 B g + C g (P 0 - p) 2 p p P total = P 0 + 2 p = 180 t o r r p = 45 t o r r k = 1 t ln 90 45 = 1.15 × 10 − 3 s − 1