?Using \(S^{\circ}\) values from Appendix C, calculate \(\Delta S^{\circ}\) values for

Chapter 19, Problem 19.51

(choose chapter or problem)

Using \(S^{\circ}\) values from Appendix C, calculate \(\Delta S^{\circ}\) values for the following reactions. In each case, account for the sign of \(\Delta S^{\circ}\).

(a) \(\mathrm{C}_{2} \mathrm{H}_{4}(g)+\mathrm{H}_{2}(g) \longrightarrow \mathrm{C}_{2} \mathrm{H}_{6}(g)\)

(b) \(\mathrm{N}_{2} \mathrm{O}_{4}(g) \longrightarrow 2 \mathrm{NO}_{2}(g)\)

(c) \(\mathrm{Be}(\mathrm{OH})_{2}(s) \longrightarrow \mathrm{BeO}(s)+\mathrm{H}_{2} \mathrm{O}(g)\)

(d) \(2 \mathrm{CH}_{3} \mathrm{OH}(g)+3 \mathrm{O}_{2}(g) \longrightarrow 2 \mathrm{CO}_{2}(g)+4 \mathrm{H}_{2} \mathrm{O}(g)\)

Text Transcription:

S^circ

Delta S^circ

C2H4(g) + H2(g) longrightarrow C2H6(g)

N2O4(g) longrightarrow 2 NO2(g)

Be(OH)2(s) longrightarrow BeO(s) + H2O(g)

2 CH3OH(g) + 3 O2(g) longrightarrow 2 CO2(g) + 4 H2O(g)