The balanced chemical reaction for the formation of ammonia from its elements is N 2 + 3 H 2 ( g ) ⇌ 2NH 3 ( g ) (a) What is Δ rxn G ° for this reaction? (b) What is Δ rxn G for this reaction if all species have a partial pressure of 0.500 bar at 25 ° C ? Assume that the fugacities are equal to the partial pressures.
The balanced chemical reaction for the formation of ammonia from its elements is N 2 + 3 H 2 ( g ) ⇌ 2NH 3 ( g ) (a) What is Δ rxn G ° for this reaction? (b) What is Δ rxn G for this reaction if all species have a partial pressure of 0.500 bar at 25 ° C ? Assume that the fugacities are equal to the partial pressures.
Solution Summary: The author explains the Gibbs free energy for a reaction when reactants and products are present in their standard states of pressure, forms, and concentration.
The balanced chemical reaction for the formation of ammonia from its elements is
N
2
+
3
H
2
(
g
)
⇌
2NH
3
(
g
)
(a) What is
Δ
rxn
G
°
for this reaction? (b) What is
Δ
rxn
G
for this reaction if all species have a partial pressure of
0.500
bar
at
25
°
C
? Assume that the fugacities are equal to the partial pressures.
Definition Definition Number that is expressed before molecules, ions, and atoms such that it balances out the number of components present on either section of the equation in a chemical reaction. Stoichiometric coefficients can be a fraction or a whole number and are useful in determining the mole ratio among the reactants and products. In any equalized chemical equation, the number of components on either side of the equation will be the same.
(f) SO:
Best Lewis Structure
3
e group geometry:_
shape/molecular geometry:,
(g) CF2CF2
Best Lewis Structure
polarity:
e group arrangement:_
shape/molecular geometry:
(h) (NH4)2SO4
Best Lewis Structure
polarity:
e group arrangement:
shape/molecular geometry:
polarity:
Sketch (with angles):
Sketch (with angles):
Sketch (with angles):
1.
Problem Set 3b
Chem 141
For each of the following compounds draw the BEST Lewis Structure then sketch the molecule (showing
bond angles). Identify (i) electron group geometry (ii) shape around EACH central atom (iii) whether the
molecule is polar or non-polar (iv)
(a) SeF4
Best Lewis Structure
e group arrangement:_
shape/molecular geometry:
polarity:
(b) AsOBr3
Best Lewis Structure
e group arrangement:_
shape/molecular geometry:
polarity:
Sketch (with angles):
Sketch (with angles):
(c) SOCI
Best Lewis Structure
2
e group arrangement:
shape/molecular geometry:_
(d) PCls
Best Lewis Structure
polarity:
e group geometry:_
shape/molecular geometry:_
(e) Ba(BrO2):
Best Lewis Structure
polarity:
e group arrangement:
shape/molecular geometry:
polarity:
Sketch (with angles):
Sketch (with angles):
Sketch (with angles):
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The Laws of Thermodynamics, Entropy, and Gibbs Free Energy; Author: Professor Dave Explains;https://www.youtube.com/watch?v=8N1BxHgsoOw;License: Standard YouTube License, CC-BY