The reaction between ammonia and oxygen is given below: 4 NH3(g) + 5 O2(g) –4 NO(g) + 6 H20(g) We therefore know that which of the following reactions can also occur? | 2 NH3(g) + 2 O2(g) → N20(g) + 3 H,0(1) | 4 NO(g) + 6 H20(g) → 4 NH3(g) + 5 02(g) | N„0(g) + 3 H20(1) → 2 NH3(g) + 2 02(g) O None of the Above
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.
![**Reaction Analysis: Ammonia and Oxygen**
The reaction between **ammonia** and **oxygen** is given below:
\[ 4 \, \text{NH}_3(g) + 5 \, \text{O}_2(g) \rightarrow 4 \, \text{NO}(g) + 6 \, \text{H}_2\text{O}(g) \]
Based on this reaction, we need to determine which of the following reactions can also occur:
1. \( 2 \, \text{NH}_3(g) + 2 \, \text{O}_2(g) \rightarrow \text{N}_2\text{O}(g) + 3 \, \text{H}_2\text{O}(l) \)
2. \( 4 \, \text{NO}(g) + 6 \, \text{H}_2\text{O}(g) \rightarrow 4 \, \text{NH}_3(g) + 5 \, \text{O}_2(g) \)
3. \( \text{N}_2\text{O}(g) + 3 \, \text{H}_2\text{O}(l) \rightarrow 2 \, \text{NH}_3(g) + 2 \, \text{O}_2(g) \)
4. None of the Above
**Evaluation of Reactions:**
- Evaluate each reaction for stoichiometric balance, feasibility, and alignment with the original reaction to check thermodynamic or kinetic plausibility.
- Consider principles such as reaction reversibility and the conservation of mass and energy.
Understanding which reactions can occur involves analyzing these reactions thoroughly in the context of chemical laws and reactivity trends.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fabf341cd-f2cd-4f7c-afdc-bb9737d3d5b5%2F3f402e81-5e17-441d-9e8b-dc4eea1e39cc%2F82j5m9_processed.png&w=3840&q=75)
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