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In which of the following reactions the energy released is not an enthalpy of atomization?
- a)decomposition of a hydrogen molecule into two hydrogen atoms
- b)decomposition of an oxygen molecule into 2 oxygen atoms
- c)formation of a water molecule
- d)decomposition of chlorine molecule
Correct answer is option 'C'. Can you explain this answer?
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Most Upvoted Answer
In which of the following reactions the energy released is not an enth...
Explanation:
In order to determine which of the given reactions does not involve the release of energy as the enthalpy of atomization, we need to understand what the enthalpy of atomization is and how it relates to the reactions.
Enthalpy of Atomization:
The enthalpy of atomization is the enthalpy change that occurs when one mole of a substance in the gas phase is formed from its atoms in the gas phase. It is the energy required to break the bonds within the molecule and convert it into individual atoms.
Reactions:
a) Decomposition of a hydrogen molecule into two hydrogen atoms:
H2(g) → 2H(g)
This reaction involves breaking the bond between two hydrogen atoms, resulting in the formation of two individual hydrogen atoms. Therefore, energy is released in the form of the enthalpy of atomization.
b) Decomposition of an oxygen molecule into 2 oxygen atoms:
O2(g) → 2O(g)
Similar to the previous reaction, this reaction involves breaking the bond between two oxygen atoms, resulting in the formation of two individual oxygen atoms. Therefore, energy is released in the form of the enthalpy of atomization.
c) Formation of a water molecule:
H2(g) + 1/2O2(g) → H2O(g)
This reaction involves the formation of a water molecule from hydrogen and oxygen atoms. It does not involve breaking any existing bonds between atoms. Instead, it involves the formation of new bonds between hydrogen and oxygen atoms to form a water molecule. Therefore, the energy released in this reaction is not in the form of the enthalpy of atomization.
d) Decomposition of a chlorine molecule:
Cl2(g) → 2Cl(g)
Similar to the previous reactions, this reaction involves breaking the bond between two chlorine atoms, resulting in the formation of two individual chlorine atoms. Therefore, energy is released in the form of the enthalpy of atomization.
Conclusion:
Among the given reactions, the formation of a water molecule (option C) does not involve the release of energy as the enthalpy of atomization.
In order to determine which of the given reactions does not involve the release of energy as the enthalpy of atomization, we need to understand what the enthalpy of atomization is and how it relates to the reactions.
Enthalpy of Atomization:
The enthalpy of atomization is the enthalpy change that occurs when one mole of a substance in the gas phase is formed from its atoms in the gas phase. It is the energy required to break the bonds within the molecule and convert it into individual atoms.
Reactions:
a) Decomposition of a hydrogen molecule into two hydrogen atoms:
H2(g) → 2H(g)
This reaction involves breaking the bond between two hydrogen atoms, resulting in the formation of two individual hydrogen atoms. Therefore, energy is released in the form of the enthalpy of atomization.
b) Decomposition of an oxygen molecule into 2 oxygen atoms:
O2(g) → 2O(g)
Similar to the previous reaction, this reaction involves breaking the bond between two oxygen atoms, resulting in the formation of two individual oxygen atoms. Therefore, energy is released in the form of the enthalpy of atomization.
c) Formation of a water molecule:
H2(g) + 1/2O2(g) → H2O(g)
This reaction involves the formation of a water molecule from hydrogen and oxygen atoms. It does not involve breaking any existing bonds between atoms. Instead, it involves the formation of new bonds between hydrogen and oxygen atoms to form a water molecule. Therefore, the energy released in this reaction is not in the form of the enthalpy of atomization.
d) Decomposition of a chlorine molecule:
Cl2(g) → 2Cl(g)
Similar to the previous reactions, this reaction involves breaking the bond between two chlorine atoms, resulting in the formation of two individual chlorine atoms. Therefore, energy is released in the form of the enthalpy of atomization.
Conclusion:
Among the given reactions, the formation of a water molecule (option C) does not involve the release of energy as the enthalpy of atomization.
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In which of the following reactions the energy released is not an enth...
The enthalpy of atomization is an enthalpy change that occurs when one molecule of a molecule breaks into its atoms, but here the of a water molecule formation does not satisfy the definition of the enthalpy of atomization.
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In which of the following reactions the energy released is not an enthalpy of atomization?a)decomposition of a hydrogen molecule into two hydrogen atomsb)decomposition of an oxygen molecule into 2 oxygen atomsc)formation of a water moleculed)decomposition of chlorine moleculeCorrect answer is option 'C'. Can you explain this answer?
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In which of the following reactions the energy released is not an enthalpy of atomization?a)decomposition of a hydrogen molecule into two hydrogen atomsb)decomposition of an oxygen molecule into 2 oxygen atomsc)formation of a water moleculed)decomposition of chlorine moleculeCorrect answer is option 'C'. Can you explain this answer? for Chemistry 2024 is part of Chemistry preparation. The Question and answers have been prepared according to the Chemistry exam syllabus. Information about In which of the following reactions the energy released is not an enthalpy of atomization?a)decomposition of a hydrogen molecule into two hydrogen atomsb)decomposition of an oxygen molecule into 2 oxygen atomsc)formation of a water moleculed)decomposition of chlorine moleculeCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Chemistry 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In which of the following reactions the energy released is not an enthalpy of atomization?a)decomposition of a hydrogen molecule into two hydrogen atomsb)decomposition of an oxygen molecule into 2 oxygen atomsc)formation of a water moleculed)decomposition of chlorine moleculeCorrect answer is option 'C'. Can you explain this answer?.
In which of the following reactions the energy released is not an enthalpy of atomization?a)decomposition of a hydrogen molecule into two hydrogen atomsb)decomposition of an oxygen molecule into 2 oxygen atomsc)formation of a water moleculed)decomposition of chlorine moleculeCorrect answer is option 'C'. Can you explain this answer? for Chemistry 2024 is part of Chemistry preparation. The Question and answers have been prepared according to the Chemistry exam syllabus. Information about In which of the following reactions the energy released is not an enthalpy of atomization?a)decomposition of a hydrogen molecule into two hydrogen atomsb)decomposition of an oxygen molecule into 2 oxygen atomsc)formation of a water moleculed)decomposition of chlorine moleculeCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Chemistry 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In which of the following reactions the energy released is not an enthalpy of atomization?a)decomposition of a hydrogen molecule into two hydrogen atomsb)decomposition of an oxygen molecule into 2 oxygen atomsc)formation of a water moleculed)decomposition of chlorine moleculeCorrect answer is option 'C'. Can you explain this answer?.
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