COMEDK · Chemistry · 19. Chemical Kinetics
For the reaction \(2 \mathrm{~N}_{2} \mathrm{O}_{5} \longrightarrow 4 \mathrm{NO}_{2}+\mathrm{O}_{2}\), rate constant \(k\) is \(4.48 \times 10^{-5} \mathrm{~s}^{-1}\) and the initial pressure is \(600 \mathrm{~atm}\). After \(10 \mathrm{~min}\), determine the final pressure of \(\mathrm{N}_{2} \mathrm{O}_{5}\).
- A 590 atm
- B 490 atm
- C 584 atm
- D 580 atm
Answer & Solution
Correct Answer
(C) 584 atm
Step-by-step Solution
Detailed explanation
The reaction is \(2 \mathrm{N}_{2} \mathrm{O}_{5} \rightarrow 4 \mathrm{NO}_{2} + \mathrm{O}_{2}\). Since the rate constant \(k\) has units of \(\mathrm{s}^{-1}\), the reaction is a first-order reaction. The integrated rate law for a first-order reaction is given by…
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