At a certain temperature this reaction follows first-order kinetics with a rate constant of 0.00138 s¯¹:S2N₂O5 (8) - 2N₂O4 (g) + O₂(g)2Suppose a vessel contains N₂O5 at a concentration of 1.21M. Calculate the concentration of N₂O5 in the vessel 620. seconds later. You may assume no otherreaction is important.Round your answer to 2 significant digits.Mx10×Ś

Answered: At a certain temperature this reaction…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

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At a certain temperature this reaction follows first-order kinetics with a rate constant of 0.00138 s¯¹:
S
2N₂O5 (8) - 2N₂O4 (g) + O₂(g)
2
Suppose a vessel contains N₂O5 at a concentration of 1.21M. Calculate the concentration of N₂O5 in the vessel 620. seconds later. You may assume no other
reaction is important.
Round your answer to 2 significant digits.
M
x10
×
Ś

Expert Solution

Step 1

First-order reaction: The rate of the first-order reaction depends only on one reactant. According to the first-order kinetics the rate constant of the first-order reaction is given by:

Where k = rate constant = 0.00138 s^-1

t = time = 620. s

a = initial concentration of the reactant = 1.21 M

a-x = remaining concentration of the reactant after t time =?

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