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Interpretation: The amount of energy released when 10 mol of lead (II) oxide formed needs to be determined.
Concept Introduction: The change in enthalpy by formation of a compound in 1 mole from its constituent elements in their standard state is said to be standard heat of formation. The
Where m and n are stoichiometric numbers.
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Answer to Problem 3E
The amount of energy released when 10 mol of lead (II) oxide formed is
Explanation of Solution
The balanced chemical reaction for the formation of lead (II) oxide from lead and oxygen is:
The value of heat of formation of all the species involved in the reaction is:
The
Substituting the values:
Thus, the heat of reaction for the formation of 2 moles of lead (II) oxide is
Since, the amount of energy released to form 2 moles of lead (II) oxide is
Hence, the amount of energy released when 10 mol of lead (II) oxide formed is
Chapter U5 Solutions
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