Author Question: The value of G at 373 K for the oxidation of solid elemental sulfur to gaseous sulfur dioxide, S (s, ... (Read 122 times)

j.rubin · **on:** Aug 27, 2018

The value of G at 373 K for the oxidation of solid elemental sulfur to gaseous sulfur dioxide, S (s, rhombic) + O2 (g) SO2 (g) is ________ kJ/mol. At 298 K, H for this reaction is -269.9 kJ/mol, and S is +11.6 J/K.

A) -300.4
B) +300.4
C) -4,597
D) +4,597
E) -274.2

Question 2

The enthalpy change for converting 1.00 mol of ice at -25.0 C to water at 50.0 C is ________ kJ.

The specific heats of ice, water, and steam are 2.09 J/g-K, 4.18 J/g-K, and 1.84 J/g-K, respectively. For H2O, Hfus = 6.01 kJ/mol, and Hvap = 40.67 kJ/mol.
A) 12.28
B) 6.27
C) 10.71
D) 4709
E) 8.83