Interpretation:
The entropy changes; ΔS, ΔSsurr and ΔSuniverse at T = 298 K for the following reaction needs to be calculated
2 2Glycine(s) → Glycylglycine(s) + H2O(l)
Concept Introduction:
The standard enthalpy change for a reaction ΔH0R measured at 298 K and 1 atm is given in terms of the difference in the standard enthalpy of formation of the products and that of reactants.
ΔH0R = ∑npΔH0f(products) - ∑nrΔH0f(reactants) ------(1)
Here,
np and nr are the number of moles of the products and reactants
The standard entropy change for a reaction ΔS0R measured at 298 K and 1 atm is given in terms of the difference in the standard entropy of formation of the products and that of reactants.
ΔS0R = ∑npS0f(products) - ∑nrS0f(reactants) ------(2)
The entropy change of the universe is the sum of the entropy changes of the system and surroundings
ΔSuniverse= ΔSsystem+ ΔSsurr ------(3)
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Physical Chemistry
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