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What is the enthalpy change for the formation of water from hydrogen and oxygen?
What is the enthalpy change for the formation of water from hydrogen and oxygen?
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1 question
Q1
What is the enthalpy change for the formation of water from hydrogen and oxygen?
It is positive.
It is negative.
It is zero.
It is undefined.
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The formation of water from hydrogen and oxygen is an exothermic reaction, resulting in a negative enthalpy change.
Questions & Step-by-step Solutions
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Q
Q: What is the enthalpy change for the formation of water from hydrogen and oxygen?
Solution:
The formation of water from hydrogen and oxygen is an exothermic reaction, resulting in a negative enthalpy change.
Steps: 5
Show Steps
Step 1: Understand that enthalpy change is the heat change during a chemical reaction.
Step 2: Identify the reaction: Hydrogen (H2) reacts with Oxygen (O2) to form Water (H2O).
Step 3: Write the balanced chemical equation: 2H2 + O2 → 2H2O.
Step 4: Recognize that this reaction releases heat, meaning it is exothermic.
Step 5: Conclude that because it releases heat, the enthalpy change is negative.
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