Question

intended to be a wered by estima . 1. Arrange the following in order of increasing absolute entropy at 298 K: Hect). Hg(s). C6H6(1). CH3CH3(1) a. Hel). Hg(s). CGHSCH3(1). C6H6(1) b. He(s). Hel). CHECH3(1). C6H6(1) c. C6H6(1). CH3CH3(I). Hg(s). Hg(1) d. CH CH3(1). CH6(). Hg(t). Hg(s) e. He(s). Hg(1), C6H6(). CHSCH 3(1) 2. Which of the following processes would be expected to have a positive AS value? a. 2 H2(g) + O2(g) → 2H2() b. H2(g) → H20(1) c. CO(g) + 1/2O2(g) → CO2(g) d. OF2(g) + H2(g) → 02(g) + 2 HF(g) 3. Which of the following values represent spontaneous processes? a. AS b. AS c. AS d. As = +358 J/K, AS = -358 J/K, AS -358 J/K, AS. = +358 J/K, AS = -358 J/K = -52 J/K +463 J/K -463 J/K 4. Arrange the following reactions in order of increasing Asrxn values: 1 2 HCl(g) → H2(g) + Cl2(g) 2. 2 NH3(g) → 3H2(g) + N2(g) 3. Ag" (aq) + Cl(aq) → AgCl(s) c. 3 <1<2 d. 2<3<1 c. 2<l <3 a. 1 <3 <2 b. I<2<3 5. All of the following have free energy of formation values of zero except a. b. Fe(s) Br2(1) d. Na(s) c. N2 (g) e. Ne2 (8) 6. Which of the following would be expected to have the largest entropy value per mole? e. Cl2(g) d. SO2(g) a. S02C12(e) b. SO2Cl2(1) c. SO2Cl2(s) 7. For the following reaction at 25°C: 12(g) + Cl2(g) → 2 IC (g) AH = -26.9 kJ and AS - 11.3 J/K. Calculate AG* for the reaction in kilojoules. d. -50.6 kJ e. +18.4 kJ c. -30.3 kJ b. 50.6 kJ a. 102 kJ

Answer 1

Entropy is measurement of randomness.

Increaseing Order of entropy

Solid < liquid < gas

(e) Corec hes poritive H AStaled SO Procem n SPartameos (C) freet + SUYY Shoke St 4 (e) 3< 12 (e) N219) T -24.9-298YCI) 32 - 30.3 kJ