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For which reaction below would you expect to have the largest orientation factor (p)?
(a) N2(g) + 3 H2(g) → 2 NH3(g)
(b) O3(g) + O(g) → 2 O2(g)
(c) CH3OH(l) + HCl(g) → CH3Cl(l) + H2O(l)
(d) 4 NH3(g) + 5 O2(g) → 4 NO(g) + 6 H2O(g)
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- (b) Study the following themochemical data very carefully: Ciz(g) - 2ci(g) I2(g) IC(g) - 1(g) + CI(g) I2(s) → 12(g) AH° = 242.3 kJ AH° = 151.0 kJ 21(g) AH° = 211.3 kJ AH° = 62.8 kJ I2(s) reacts with Cl2(g) to produce ICI(g). Write the chemical equation to produce ONLY one mole of ICI(g) (i) Calculate AH° for the reaction of I2(s) with Cl2(g) to form 1 mole of ICI(g). Use all the data given above. (ii) What law did you use to calculate AH° above? (iii) What are the names of the following processes? I2(s) → 12(g) I2(g) 21(g) ICI(g) I(g) + Cl(g)Explain why each of the following chemical equations is not a correct formation reaction:(a) 4 AI(s) + 3 O2(g)→2 AI2O3(s)(b) N2(g) +3/2 H2(g) → NH3(g)(c) 2 Na(s) + O(g) → Na2O(s)Which reaction is most likely to have a positive ASys? a) SiO2(s) + 3 C(s) b) 6 CO2(g) + 6 H¿O(g) c) CO(g) + Cl2(g) d) 3 NO:(g) + H2O(1) 2 HN0;(1) + NO(g) SiC(s) + 2 CO(g) - CH12O6(8) + 6 O2(8) - COCI2(g)
- Be sure to answer all parts. Determine Angas for each of the following reactions: (a) MgCO3(s) →→→ MgO(s) + CO₂(g) mol (b) 2 H₂(g) + O₂(g) → 2 H₂O() mol (c) HNO3(1) + CIF(g) → CIONO₂(g) + HF(g) molIndicate whether the reaction is exothermic or endothermic Cs2() + 3CI2(g) → CCI4() + S2CI2() AH° = - 112k)1) Use Hess's Law to determine AH for the following target reaction. 3 CO₂(g) + 4 H₂O(g) b) C3Hg(g) + 5 O₂(g) C(s) + O₂(g) -CO₂(g) 2 H₂(g) + O₂(g) 3 C(s) + 4 H₂(g) →→→ 2 H₂O(g) C3H8(g) AH = AH = ΔΗ ΔΗ = ??? -2043 kJ -393.5 kJ -483.6 kJ
- 9)Diethyl ether is a volatile, highly flammable organic liquid that is used mainly as a solvent. The vapor pressure of diethyl ether is 401 mmHg at 18 degrees C. Calculate its vapor pressure at 52 degrees C. 10) From the Haber synthesis, at the start of a reaction there are 0.249 mol N2, 3.21 X 10-2 mol H2 and 6.42 X 10-4 mol NH3 in a 3.50 L reaction vessel at 375oC. If the equilibrium constant Kc for the reaction is 1.2 at this temperature, decide whether the system 2 #3 $ 4 % 5 MacBook Pro 6 & 7 *00 I 874 CHu + 2 Oze) CO2ig) + 2 H2O1n COue) +2 H;0n CHe) + 2 Oze) 2 C,H180 + 25 Ozug) 16 CO) + 18 H;Og 2 CH,OH, + 3 0ze) → 2C0u9+4H;0µ Which of the following is an endothermic reaction? * 2 C3H18(1) + 25 O218) → 16 CO218) + 18 H2O(g) 2 CH3OH) + 3 O2«) - 2 CO2e) + 4 H,O CO2ne) + 2 H2O) CHẠE) + 2 O2ie) CH4(g) + 2 O28) CO26) + 2 H2O)3 Draw labelled energy level diagrams for the following reactions: a S(s) + O₂(g) → SO₂(g) AH = -297 kJ mol-¹ b 6C0₂(aq) + 6H₂O(l) → C6H₁206(aq) + 60₂(g) AH=+2800 kJ mol-¹ C6H₁206
- From the following reactions, determine the reactions that are exothermic. (i) F(g)+e¯ →F¯ (8) (ii) CaCl, (s) → Ca(s)+Cl, (g) (iii) NaCl(s) → Na* (8)+CI"(g) (iv) K(g)+e →K (g) (A) (i) and (iv) are exothermic (B) (ii) and (iii) are exothermic (C) All the reactions are exothermic (D) (i), (ii), and (iii) are exothermicWhich of the following reactions is most likely to be exothermic?(a) F2(g) → 2 F(g) (b) 2 Cl(g) → Cl2(g) (c) Cu(s) → Cu(l) (d) CBr4(g) → C(g) + 4 Br(g) (e) CO(g) → C(g) + O(g)OH H2SO4 (catalyst) + 2 CH3CO₂H