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H2 reacts with the halogens (X2) according to the reaction: H2(g)+X2(g)⇌2HX(g) where X2 can be Cl...

H2 reacts with the halogens (X2) according to the reaction:
H2(g)+X2(g)⇌2HX(g)
where X2 can be Cl2, Br2, or I2.
Reactant/Product   ΔH∘f(kJ/mol)   ΔS∘f(J/mol⋅K)
H2(g)   0   130.7
Cl2(g)   0   223.1
HCl(g)   -92.3   186.9
Br2(g)   30.9   245.5
HBr(g)   -36.3   198.7
I2(g)   62.42   260.69
HI(g)   26.5   206.6
Part A
Calculate ΔH∘ for the reaction between hydrogen and Cl2.
Express your answer using four significant figures.


ΔH∘ Δ H ∘ =   

kJ
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Part B
Calculate ΔS∘ for the reaction between hydrogen and Cl2.
Express your answer using three significant figures.


ΔS∘ Δ S ∘ =   

nothing
J/K
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Part C
Calculate ΔG∘ for the reaction between hydrogen and Cl2.
Express your answer using four significant figures.


ΔG∘ Δ G ∘ =   

nothing
kJ
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Part D
Calculate Kp for the reaction between hydrogen and Cl2.
Express your answer using three significant figures.


Kp K p =   

nothing
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Part E Complete previous part(s)
Part F Complete previous part(s)
Part G Complete previous part(s)
Part H Complete previous part(s)
Part I Complete previous part(s)
Part J Complete previous part(s)
Part K Complete previous part(s)
Part L Complete previous part(s)
Part M Part complete
Which reaction is most spontaneous?
Which reaction is most spontaneous?
with Cl2
with Br2
with I2
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Part N Part complete
Least spontaneous?
Least spontaneous?
with Cl2
with Br2
with I2
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Part O Part complete
What is the main factor driving the difference in the spontaneity of the three reactions?
Match the words in the left column to the appropriate blanks in the sentences on the right. Make certain each sentence is complete before submitting your answer.
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The entropy change in the reactions is very constant. The spontaneity is determined by the standard enthalpy of formation of the acid.
acid returned
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Part P Part complete
Does higher temperature make the reactions more spontaneous or less spontaneous?
Does higher temperature make the reactions more spontaneous or less spontaneous?
more spontaneous
less spontaneous
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Answer #1

Paxk A = L 2 (-91.3) 司 [2 (186m]-(222.1 + 130 C?. kJ/cmo) ニー190.26 37

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