Determine the average reaction rate for the production of oxygen gas between 180s and 320s. Show all work. Determine the initial rate of reactant decomposition. Show all work
Thermochemistry
Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.
Exergonic Reaction
The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.
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Unit 3: Energy and Rates of Reaction
Analyzing Rates of Reactions Assignment /8 Communication marks
- Reaction progress data of the decomposition of NO2(g) were collected and graphed (Figure 5 below).
Image source: Nelson Chemistry 12, 2012
- Determine the average
reaction rate for the production of oxygen gas between 180s and 320s. Show all work.
- Determine the initial rate of reactant decomposition. Show all work
![Reaction Progress
0.0100
0.0075-
0.0050
0.0025
[0₂(g)]
OFERT
0
0 50 100 150 200 250 300 350 400
Time (s)
Figure 5 A sealed flask containing nitrogen dioxide gas was maintained at 300 °C. The
concentrations of gaseous nitrogen dioxide, nitric oxide, and oxygen were determined every 50 s.
This data was then graphed.
Concentration (mol/L)
[NO₂(g)]
[NO(g)]](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F5bd413f8-562d-4452-b4a2-79ca4a5a65c0%2F3ae793c7-5dc9-47b9-b130-d2a74b6779ae%2F3we78ci_processed.png&w=3840&q=75)
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