EE 86% Wed 11:19 AM Q. Chrome File Edit View History Bookmarks People Window Hel
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EE 86% Wed 11:19 AM Q. Chrome File Edit View History Bookmarks People Window Help Mastering Chemistry: CH 16 HW https:// session. masteringchemistry.com /myct/ next&assignmentProblemID; 77486265 GEN CHEM 1120 Spring 2017 Signed in as Hussain Al sidran Mastering Che Out CH 16 HW Standard Entropy of Reaction Resources previous 2 of 6 l next GEN CH My Courses Standard Entropy of Reaction 2e Course Home SubmIt Hints My Answers Give Up Review Part Molecular systems tend to move spontaneously to a state of maximum randomness or disorder. Molecular randomness, or disorder, is called Assignment entropy and is denoted by the symbol S. As a state Part B function, entropy change, AS, depends only on TITLE IONS Calculate the standard entropy change for the reaction initial and final states. AS has a positive value 2Mg (s) O2 (g) 2Mgo(s) CH 08 HW View when disorder increases and a negative value when disorder decreases. The following conditions using the data from the following table: HW usually result in an increase in entropy: CH 12 HW Substance AH (kJ /mol) AG (kJ/mol) Se J/(K.mol) a change of phase: solid liquid- gas, an increase in the number of gas molecules, or CH 14 HW View a solid dissolving to form a solution Mgo (5) -602.0 Although the sign of the entropy change can be CH 15 HW View predicted as described above, the actual value of Express your answer to four significant figures and include the appropriate units. ASO must be calculated from the absolute 7 HW CH 1z Hw entropy values, S of the reactants and products: AS S (products) -S (reactants) AS Value Units Submit Hints My Answers Give Up Review Part Continue Provide FeedbackExplanation / Answer
deltaS0= 2*deltaS0(MgO) - [2*deltaS0(Mg) + deltaS0(O2)]
=2*27 - [2*32.7 + 205]
= - 216.4 J/K
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