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Calculate $\Delta G^{\circ}$ for the following reactions at $25^{\circ} \mathrm{C}$ :(a) $\mathrm{N}_{2}(g)+\mathrm{O}_{2}(g) \longrightarrow 2 \mathrm{NO}(g)$(b) $\mathrm{H}_{2} \mathrm{O}(l) \longrightarrow \mathrm{H}_{2} \mathrm{O}(g)$(c) $2 \mathrm{C}_{2} \mathrm{H}_{2}(g)+5 \mathrm{O}_{2}(g) \longrightarrow$ $4 \mathrm{CO}_{2}(g)+2 \mathrm{H}_{2} \mathrm{O}(l)$(Hint: Look up the standard free energies of formation of the reactants and products in Appendix 3.)

a. 173.4 KJ/molb. 8.6 KJ/molc. -2470 KJ/mol

Chemistry 102

Chapter 17

Entropy, Free Energy, and Equilibrium

Thermodynamics

University of Central Florida

Rice University

Drexel University

University of Kentucky

Lectures

00:42

In thermodynamics, the zeroth law of thermodynamics states that if two systems are in thermal equilibrium with a third system, they are also in thermal equilibrium with each other.

01:47

A spontaneous process is one in which the total entropy of the universe increases. In a spontaneous process, the system will move from an ordered state to a disordered state, such as from ice to water, or from a solid to a gas. The concept of spontaneity was introduced by Rudolf Clausius in 1850.

04:18

Calculate $\Delta G^{\circ…

05:28

Calculate $\Delta H^{\circ…

02:57

01:49

Use data in Appendix C to …

solution for the evil problem where we have to calculate Delta Jeannot for the glove innovations. A 25 degree Celsius so calculation for part a Delta Jeannot is equal to two Delta G. Note. If not into nitrogen oxide minus delta. Achy not into nitrogen molecules minus delta. Achy not into or two molecule captain. By putting values we have toe into 86.7, minus zero minus zero. Kate, you will Permal. Is it well too? 173.4 killed with Joel Permal? Is he calculated value in next four, but be Delta Gee. Note is equal to Delta Jeannot into H toe in this c state minus Delta if not in tow. H toe in legal state by putting values behave. One in two minus 2 to 8.6, minus one into minus 237.2. Killer. Joel Permal It's equal toe 8.6. Killer. Joel Pirmin Venture For part C. Delta Jeannot is equal to four Delta, if not into C 02 plus two into Delta, if not into H 20 minus two into Delta. Achy not into C two h two. My news five into Delta G not into or two By putting values. We have four into minus 394.4 plus two into minus 237.2 minus to multiply 209 minus two minus five. Multiply zero is equal to minus 2470 Kelo! Joel per more is the calculated offensive. Uh huh, Yeah, yeah, yeah!

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