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Thermodynamic tables Substance ΔfG° (kJ mol-1) ΔfH° (kJ mol-1) ΔS° (J mol-1 K-1) CH2O(g) -102.53 -108.57 218.77 HCOOH(ℓ) -361.35 -424.72 128.95 H2(g) 0 0 130.684 H2O(ℓ) -237.129 -285.830 69.91 H2O(g) -228.572 -241.818 188.825 NH3(g) -16.45 -46.11 192.45 NO2(g) 51.31 33.18 240.06 N2O(g) 104.20 82.05 219.85 N2O4(g) 97.89 9.16 77.28  

Gibbs free energy

Below are the Maxwell’s relations (named for James Maxwell),

Based on the fundamental equations, what is

Gibbs free energy

For the reactions below, use the given information to predict which direction the equilibrium will proceed (towards more reactants or towards more products) Reactions Reaction K Current P values Equilibrium reaction will … A. PCl3(g) + Cl2(g) ⇌ PCl5(g) 12.1 PPCl3 = 0.0194 barPCl2 = 0.115 barPPCl5 = 0.515 bar [A] B. N2(g) + 3H2(g) ⇌ 2NH3(g) 0.629 PN2 = 1.00 barPH2 = 0.220 barPNH3 = 0.0151 bar [B]  

a minus lens produces

What direction is the induced prism’s base if the patient is looking above the optical centers of a +3.00?

When laying out a standard flat top bifocal to edge you use the _________ for the decentration.

When preparing the lensometer to lay out a single vision lens, you should set the axis wheel to the prescription, the power drum to the sphere power, and then focus the small sphere lines first.