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What is the enthalpy change for the reaction: N2(g) + 3H2(g) → 2NH3(g)?
What is the enthalpy change for the reaction: N2(g) + 3H2(g) → 2NH3(g)?
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Practice Questions
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Q1
What is the enthalpy change for the reaction: N2(g) + 3H2(g) → 2NH3(g)?
It is always positive.
It is always negative.
It can be either positive or negative depending on conditions.
It is zero.
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The formation of ammonia from nitrogen and hydrogen is an exothermic reaction, thus the enthalpy change is negative.
Questions & Step-by-step Solutions
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Q
Q: What is the enthalpy change for the reaction: N2(g) + 3H2(g) → 2NH3(g)?
Solution:
The formation of ammonia from nitrogen and hydrogen is an exothermic reaction, thus the enthalpy change is negative.
Steps: 5
Show Steps
Step 1: Identify the reactants and products in the reaction: N2(g) + 3H2(g) → 2NH3(g).
Step 2: Understand that enthalpy change refers to the heat energy change during a chemical reaction.
Step 3: Recognize that the formation of ammonia (NH3) from nitrogen (N2) and hydrogen (H2) releases heat.
Step 4: Since heat is released, the reaction is classified as exothermic.
Step 5: In exothermic reactions, the enthalpy change is represented as a negative value.
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