e previous lpy and Gibb\'s Free Energy Part A mical energy is released or absorb
ID: 103597 • Letter: E
Question
e previous lpy and Gibb's Free Energy Part A mical energy is released or absorbed from Calculate the standard enthalpy change for the reaction 2A + B 2C + 2D tions in various forms. The most easily asurable form of energy comes in the form of t, or enthalpy. The enthalpy of a reaction can be culated from the heats of formation of the ostances involved in the reaction Hmn-an; (prod 3 reactants) where the heats of formation are given in the following table Substance kJ/mol) ucts) - 265 tropy changeSo , is a measure of the number energetically equivalent microstates introducecd to the system during the reaction The degree of pontaneity of a reaction is represented by the bbs free energy The Gibbs fr depends on both the enthalpy and entropy changes hat take place during the reaction B 389 217 521 Express your answer in kilojoules. ee energy Hints where T is standard temperature, 298 K k.J Submit My Answers Give Up Incorrect; Try Again; 4 attempts remaining Part BExplanation / Answer
(delta H0)rxn = (delta H0f)product - (delta H0f)reactant
= {2*217 + 2*(-512)} - {2*(-265) + (-389)}
= 434 - 1024 - (-530 - 389)
= -590 + 919
= 329 KJ/mol
Answer : 329 KJ/mol
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