CHE154-H Gen Chem I Bronikow

16

What is the free energy change for the reaction below, if the reaction quotient, Q, at 25.0oC is equal to 5.95e-5?5C2H2(g) + 6 H2(g) → C10H22(g) ΔGo = -1.01e3 kJ. a) ΔG = -1.036e3 kJ b) ΔG = -1.010e3 kJ c) ΔG = -1.014e3 kJ d) ΔG = 1.057e3 kJ

Which of the following processes require the most energy? H2O(l) ⟶⟶ H2O(g) H2O(s) ⟶⟶ H2O(l) H2O(s) ⟶⟶ H2O(g) H2O(g) ⟶⟶ H2O(l) H2O(l) ⟶⟶ H2O(s) H2O(g) ⟶⟶ H2O(s)

For which of the following reactions is AS° > 0. Choose all that apply. CH₂(g) + H₂O(g) → 3H₂(g) + CO(g) 2NO(g) + 2H₂(g) → N₂(g) + 2H₂O(l) 2NO(g) + O₂(g) → 2NO₂(g) 2CO₂(g) + N₂(g) → 2CO(g) + 2NO(g) ONH₂HS(s)→ NH3(g) + H₂S(g)

Esc Lock Fn 150 A reaction is thermodynamically unstable (spontaneous) but no change is observed. The reaction is probably Select the correct answer below: O kinetically unstable. kinetically stable. thermodynamically stable but kinetically unstable. O None of the above N F2 N W S F3 X Alt # m 3 E D F4 C $ F5 F dos % 5 V F6 G B F7 DELL Y H F8 7 N F9 * 00 8 J₁ 00 M F10 5 K 2 F11 Alt L 3 F12 E P Ctrl PrtScr + 11 ? { } [ LG 1 Insert 11 Page Up +Home

For the reaction N2(g) + O2(g)→2NO(g) AH° = 181 kJ and AS° = 24.9 J/K AG° would be negative at temperatures (above, below) K. Enter above or below in the first box and enter the temperature in the second box. Assume that A H° and AS° are constant.

5. Consider the following reaction at equilibrium: M + N2Q +R AH = + 350 kJ %3D a) What would have to this system if it was placed in an ice water bath? Explain you reasoning. b) What would happen to this system if it was placed in a hot water bath? Explain your reasoning.

What is S° for B in the reaction 3 A → 2 B if ∆S°(rxn) =-227.8 J/mol ･ K? [S° (A) = (205.0 J/mol ･K)]