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https://session.masteringchemistry.com/myct/itemView?offset-nextassignmentProblemID-54529474 IM114 Online Fall 2015 Activity 13-Thermodynamics Ch19: A Molecular Interpretation of Entropy. Seg2 Gibbs Free Energy and the Consider the spontaneous explosive decomposition reaction for nitroglycern Part A-Predicting the entropy change for the systern. .ystem from the balanced equation Predicting the entropy change for the system, ASsystem from the balanced equation: Is ASystem positive or negative? Is this entropy change a driving force for spontaneity? Positive Negative Yes Predicting how the enthalpy change for the system. Honstem, affects AS Based on the sign of AHsptem, is this reaction endothermic or exothermic? Does the temperature of the surroundings increase or decrease? No Endothermic Is 4Surreundings positive or negative? Exothermic Is this enthalpy change a driving force for spontaneity? Increase 35 Decrease What is the sign of ASunverse for this reaction?Explanation / Answer
Entropy Change for these reaction is highly positive as from 4 molecules of reactant in gasseous state 29 molecules of gasseous product is obtained.
As the entropy change is positive this entropy change is not a driving force for spontaneity.
This reaction is exothermic as the sign of enthalpy change is negative.
As heat is libertaed the tempertaure of surrounding increases during the reaction.
Entropy change of the surrounding is also positive.
As the change in enthalpy is negative this contributes to the negative Gibb's Free Energy change as thus is a driving force for spontaneity.
The entropy of universe is always increasing. So, the value is positive.
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