Welcome to Westonci.ca, the Q&A platform where your questions are met with detailed answers from experienced experts. Experience the ease of finding quick and accurate answers to your questions from professionals on our platform. Discover in-depth answers to your questions from a wide network of professionals on our user-friendly Q&A platform.
Sagot :
The standard change in free energy is -35.76 kJ/mol. Values of standard free energy are obtained from thermodynamic tables.
What is the standard change in free energy?
The standard change in free energy can be obtained using the relation;
ΔG°= ΔH° - TΔS
When;
ΔH°f(HI) = 26.466 kJ/mol
ΔH°f(H2) = 0 kJ/mol
ΔH°f(I2) = 0 kJ/mol
ΔS°f(HI) = 221.63 J/K/mol
ΔS°f(H2) = 145.64 J/K/mol
ΔS°f(I2) = 0 J/K/mol
Hence;
ΔH°freaction = [ 2(26.466)] - 0
= 52.932 kJ/mol
ΔS°freaction = [2(221.63 ) ] - [145.64 + 0]
= 443.26 - 145.64 = 297.62 J/K/mol
ΔG°= 52.932 * 10^3 - [298 * 297.62 ]
ΔG°= -35.76 kJ/mol
The standard change in free energy is -35.76 kJ/mol.
Learn more about change in free energy: https://brainly.com/question/14143095
The change in free energy for the given chemical reaction between hydrogen and iodine gas is -31.068 kJ/mol.
How do we calculate the free energy change?
Free energy change of any reaction will be calculated by using the below equation:
ΔG° = ΔH° - TΔS, where
ΔH° = change in enthalpy
T = absolute temperature = 298K
ΔS = change in entropy
Change in any quantity during the reaction will be find out by substracting the reactant values from product values.
Given chemical reaction is:
H₂(g) + I₂(g) → 2HI(g)
ΔH° = 2(26.466)] - 0 = 52.932 kJ/mol
ΔS = [2(206.6) ] - [131 + 0] = 413.2 - 131 = 282.2 J/K.mol = 0.282 kJ/K.mol
On putting values on above equation, we get
ΔG° = 52.932 - (298)(0.282) = -31.068 kJ/mol
Hence required free enrgy is -31.068 kJ/mol.
To know more about free energy change, visit the below link:
https://brainly.com/question/7600523
#SPJ4
We hope you found what you were looking for. Feel free to revisit us for more answers and updated information. We appreciate your time. Please revisit us for more reliable answers to any questions you may have. Westonci.ca is here to provide the answers you seek. Return often for more expert solutions.
