1 The change in the Gibbs energy of

Kalondasigoaluhe

Kalondasigoaluhe

Answered question

2022-04-24

1 The change in the Gibbs energy of a certain constant-pressure process was found to fit the 
expression ∆𝐺 / 𝐽 = −85.40 + 36.5𝑇 where 𝑇 is the temperature in Kelvins. Find the values of
Δ𝐻 (in 𝐽) and Δ𝑆 (in 𝐽 · 𝐾−1) for the process. 
4. A Carnot cycle uses 1.00 𝑚𝑜𝑙 of a monatomic ideal gas as a working substance. From an 

Answer & Explanation

star233

star233

Skilled2023-04-29Added 403 answers

We are given the expression for the change in Gibbs energy of a constant-pressure process as:
ΔG/J=85.40+36.5T
where T is the temperature in Kelvin.
We know that the relationship between Gibbs energy, enthalpy, and entropy is given by:
ΔG=ΔHTΔS
We can rearrange this equation to solve for ΔH:
ΔH=ΔG+TΔS
Substituting the expression for ΔG from the given equation, we get:
ΔH=(85.40+36.5T)J+TΔS
We also know that at constant pressure, the relationship between ΔH and ΔS is given by:
ΔH=TΔS
Substituting this into the expression for ΔH, we get:
ΔH=TΔS=(85.40+36.5T)J+TΔS
Simplifying, we get:
(1T)ΔS=85.40J
Solving for ΔS, we get:
ΔS=85.40J1T
Substituting this into the equation for ΔH, we get:
ΔH=TΔS=T·85.40J1T=85.40JT1T
Therefore, the values of ΔH and ΔS for the process are ΔH=85.40JT1T and ΔS=85.40J1T.

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