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Concept explainers
Calculate ΔH° for each of the following reactions, which occur in the atmosphere.
a. C2H4(g) + O3(g) → CH3CHO(g) + O2(g)
b. O3(g) + NO(g) → NO2(g) + O2(g)
c. SO3(g) + H2O(l) → H2SO4(aq)
d. 2NO(g) + O2(g) → 2SO2(g)
(a)
![Check Mark](/static/check-mark.png)
Interpretation: For given reactions, standard enthalpy change has to be calculated.
Concept introduction
Standard Enthalpy change (
Answer to Problem 121AE
Explanation of Solution
Explanation
Given: Standard enthalpy value for given substance in the reactions are,
Substance and state
|
|
Standard enthalpy values for given substances in the reaction are shown above.
To calculate standard enthalpy change for given reaction.
The standard enthalpy change for given equation is -361 kJ .
=
=
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)
![Check Mark](/static/check-mark.png)
Interpretation: For given reactions, standard enthalpy change has to be calculated.
Concept introduction
Standard Enthalpy change (
Answer to Problem 121AE
Explanation of Solution
Given: Standard enthalpy value for given substance in the reactions are,
Substance and state
|
|
Standard enthalpy values for given substances in the reaction are shown above.
To calculate standard enthalpy change for given equation.
The standard enthalpy change for given equation is -199kJ.
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)
![Check Mark](/static/check-mark.png)
Interpretation: For given reactions, standard enthalpy change has to be calculated.
Concept introduction
Standard Enthalpy change (
Answer to Problem 121AE
Explanation of Solution
Explanation:
Given: Standard enthalpy value for given substance in the reactions are,
Substance and state
|
|
Standard enthalpy values for given substances in the reaction are shown above.
To calculate standard enthalpy change for given equation.
The standard enthalpy change for given equation is -227kJ .
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)
![Check Mark](/static/check-mark.png)
Interpretation: For given reactions, standard enthalpy change has to be calculated.
Concept introduction
Standard Enthalpy change (
Answer to Problem 121AE
Explanation of Solution
Explanation:
Given: Standard enthalpy value for given substance in the reactions are,
Substance and state
|
|
Standard enthalpy values for given substances in the reaction are shown above.
To calculate standard enthalpy change for given equation.
The standard enthalpy change for given equation is -112kJ.
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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Chapter 6 Solutions
Student Solutions Manual for Zumdahl/Zumdahl/DeCoste?s Chemistry, 10th Edition
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