Concept explainers
(a)
Interpretation:
The heat that is released when
Concept introduction:
The standard enthalpy of reaction is calculated by the summation of standard enthalpy of formation of the product minus the summation of standard enthalpy of formation of reactant at the standard conditions.
The formula to calculate the standard enthalpy of reaction
Here, m and n are the
(a)
Answer to Problem 6.108P
Explanation of Solution
The expression to calculate the moles of
Substitute
The balanced chemical equation for the reaction of
The formula to calculate the standard enthalpy of a given reaction
Substitute
The heat released by
The standard enthalpy of reaction depends on the standard enthalpy of formation of the product and the standard enthalpy of formation of reactant at the standard conditions.
(b)
Interpretation:
The temperature of the product mixture is to be calculated.
Concept introduction:
The expression to calculate the moles of solute when given mass and molecular mass of compound are given is as follows:
Stoichiometry of a reaction is utilized to determine the amount of any species in the reaction by the relationship between the reactants and products.
Consider the general reaction,
One mole of
Molar heat capacity
The formula to calculate heat required is as follows:
Here,
(b)
Answer to Problem 6.108P
The temperature of the product mixture is
Explanation of Solution
The formula to calculate the moles of
Substitute
The formula to calculate the moles of
Substitute
The formula to calculate the moles of
Substitute
The mole fraction of
The formula to calculate the moles of
Substitute
The formula to calculate the final temperature is as follows:
Rearrange the equation (7) to calculate
Substitute
The amount of species in the reaction depends on the stoichiometry of the reaction by the relationship between the reactants and products.
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Chapter 6 Solutions
Chemistry: The Molecular Nature of Matter and Change
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