MasteringChemistry: Quiz Chapter 19 - Google Chrome ? Secure l https://session.m

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MasteringChemistry: Quiz Chapter 19 - Google Chrome ? Secure l https://session.masteringchemistry.com/myct/itemview.assig ID 9771269780ffset-next Qiz Chapter 19 Hide Timer 00:20:52 Item 12 12 of 20> Use the table below to answer the question that follovw Themodynamic Quantities for Selected Substances at 298. 15 K (25°C) Substano Ca(s) CaCl2( 41.4 104.6 200.8 -795.8 -748.1 Caz (a) 2267 209.2 Chloine Cl2 (g) Cl-(a) 222.96 56.5 -1672 -131.2 Oxygen 205.0 O2 (8) H2o(l) -285.83 -237.13 69.91 P2 (g) PC13 (g) 1443 -283.1 103.7 -269.6 -502.5 218.1 311.7 325 POCI3 (g-542-2 Sulfur S (s thombic) 0 502(g) S03(g) 31.88 248.5 256.2 -269.9 -300.4 -3952 -370.4 O Type here to search 957 PM E 4/5/2018

Explanation / Answer

the given equation is,

2S(Rhombic) + 3 O2 (g) ------> 2 SO2(g)

dG0 rxn = dG0 products - dG0 reactants

dG0 rxn = 2(-370.4) - (2*0+3(0))

dG0 rxn = -740.8 KJ/mol

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