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Use the table below to answer the questions that follow. Thermodynamic Quantities for Selected Substanoes at 298.15 K (25C) Substance AH°f (kJ/mol) AG°f (kJ/mol) S JK-mol) Carbon 284 C (s, diamond) C (s graphite) 0 C2H2 (8) C2H4 (8) C7H6 (g) CO (8) CO2 (8) 1.88 243 5.69 209.2 5230 -84.68 110.5 200.8 2194 229.5 197.9 213.6 6811 -3289 -137.2 -394.4 -393.5 Hydrogen H2(8) 130.58 Oxygen O2 (8) H20 () 205.0 69.91 -285.83 -237.13

1.) The value of S° for the oxidation of carbon to carbon dioxide,

C (s, graphite) + O2 (g) → CO2(g)

is __________ J/K mol. The combustion of carbon, as in charcoal briquettes, in the presence of abundant oxygen produces carbon dioxide.

2.)The value of S° for the reaction

2C (s, diamond) 02 (g) → 2CO (g

is __________ J/K.

3.)The value of S° for the decomposition of gaseous sulfur dioxide to solid elemental sulfur and gaseous oxygen,

rhombic + 0 e

is __________ J/K mol.

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