Problem: For the decomposition of gaseous dinitrogen pentoxide,2N2O5(g) ⟶ 4NO2(g) + O2(g)the rate constant is k = 2.8 x 10-3 s-1 at 60°C. The initial concentration of N2O5 is 1.58 mol/L. (a) What is [N2O5] after 5.00 min? 

🤓 Based on our data, we think this question is relevant for Professor Waddell's class at UC.

FREE Expert Solution

Recall that the unit for the rate constant is given by:


k=Mn-1·s-1


The given rate constant only has –1 as its units, which means n = 1 and the reaction follows first-order kinetics.


The integrated rate law for a first-order reaction is as follows:


ln[A]t=-kt+ln[A]0


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Problem Details

For the decomposition of gaseous dinitrogen pentoxide,

2N2O5(g) ⟶ 4NO2(g) + O2(g)

the rate constant is k = 2.8 x 10-3 s-1 at 60°C. The initial concentration of N2O5 is 1.58 mol/L. 

(a) What is [N2O5] after 5.00 min? 

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Based on our data, we think this problem is relevant for Professor Waddell's class at UC.

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Our data indicates that this problem or a close variation was asked in Chemistry: The Molecular Nature of Matter and Change - Silberberg 8th Edition. You can also practice Chemistry: The Molecular Nature of Matter and Change - Silberberg 8th Edition practice problems.