
Concept explainers
Calculate ∆H° for each of the following reactions, which occur in the atmosphere.
a.
b.
c.
d.
(a)

Interpretation: For given reactions, standard enthalpy change has to be calculated.
Concept introduction
Standard Enthalpy change (
Answer to Problem 111AE
Explanation of Solution
Given: Standard enthalpy value for given substance in the reactions are,
Substance and state
|
|
=
=
The standard enthalpy change for the reaction can be calculated by enthalpy of product versus enthalpy of reactant. The standard enthalpy values for given substances in a reaction are shown (Table.1). By substituting these values in standard enthalpy change equation the standard enthalpy change for the reaction has calculated as -361 k J .
(b)

Interpretation: For given reactions, standard enthalpy change has to be calculated.
Concept introduction
Standard Enthalpy change (
Answer to Problem 111AE
Explanation of Solution
Given: Standard enthalpy value for given substance in the reactions are,
Substance and state
|
|
The standard enthalpy change for the reaction can be calculated by enthalpy of product versus enthalpy of reactant. The standard enthalpy values for given substances in a reaction are shown (Table.1). By substituting these values in standard enthalpy change equation the standard enthalpy change for the reaction has calculated as -199kJ.
(c)

Interpretation: For given reactions, standard enthalpy change has to be calculated.
Concept introduction
Standard Enthalpy change (
Answer to Problem 111AE
Explanation of Solution
Given: Standard enthalpy value for given substance in the reactions are,
Substance and state
|
|
The standard enthalpy change for the reaction can be calculated by enthalpy of product versus enthalpy of reactant. The standard enthalpy values for given substances in a reaction are shown (Table.1). By substituting these values in standard enthalpy change equation the standard enthalpy change for the reaction has calculated as -227kJ.
(d)

Interpretation: For given reactions, standard enthalpy change has to be calculated.
Concept introduction
Standard Enthalpy change (
Answer to Problem 111AE
Explanation of Solution
Given: Standard enthalpy value for given substance in the reactions are,
Substance and state
|
|
The standard enthalpy change for the reaction can be calculated by enthalpy of product versus enthalpy of reactant. The standard enthalpy values for given substances in a reaction are shown (Table.1). By substituting these values in standard enthalpy change equation the standard enthalpy change for the reaction has calculated as -112kJ.
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