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- 17. Given the following set of reaction data, AH = -285.83 kJ mol- H2 (g)+}02(8) 2B(s) +3H, (8) 2B(s) +O2(8) –→ B,O3(s) → H2O(1) → B,H, (8) AH = 36.4 kJ mol- AH = –1273.5 kJ mol determine the heat of reaction (in kJ mol') for the following reaction. – B2O3 (s) +3H,0(1) w bns maldorg B,H, (8) + 30, (g) - AH = ? kJ mol-1 lo teari done roi noltaupa 189T) of 9je s beau mo A: –2167Calculate AH for the reaction: C2H4 (g) + H2 (g) → C2H6 (g), from the following data: C2H4 (g) + 3 O2 (g) → 2 CO2 (g) + 2 H2O (I) AH = -1411. kJ/mol 2 C2H6 (g) + 7 O2 (g) → 4 CO2 (g) + 6 H2O (1) AH = -3120. kJ/mol 2 H2 (g) + O2 (g) → 2 H20 (1) AH = -571.6 kJ/mol Select one: O - 136.8 kJ/mol O 1137 kJ/mol O -273.6 kJ/mol O 133.3 kJ/molFrom 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 exothermic
- Calculate AH for the reaction C2H4 (g) + H2 (g) → C2H6 (g), from the following data. C2H4 (g) + 3 O2 (g) → 2 CO2 (g) + 2H2O (1) AH 1411 kJ / mol C2H6 (g) + O2 (g) → 2 CO2 (g) + 3 H2O (1) ΔΗ - 1560 kJ / mol H2 (g) + O2 (g) → H2O (1) AH = - 285. 8 kJ / molGiven the following combustion data for three different fuels: CH4 (g), C8H18 (l) and CH3OH (l),CH4 (g) + 2 O2 (g) → CO2 (g) + 2 H2O (l) ΔH° = −890 kJ2 C8H18 (l) + 25 O2 (g) → 16 CO2 (g) + 18 H2O (l); ΔH°= −10,914 kJ2 CH3OH (l) + 3 O2 (g) → 2 CO2 (g) + 4 H2O (l) ΔH° = −1453 kJwhich fuel provides the most energy per gram upon combustion and which provides the least? could you please explain this problemFrom 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" (g)+Cl" (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 exothermic
- Using the data provided below, calculate the standard enthalpy change for the following reaction: CH4(g) + N2(g) HCN(g) + NH3(g) AH;° HCN(g) = 135.5 kJ/mol AH;° CH4(g) = -74.6 kJ/mol AH:° NH3(g) = -45.9 kJ/mol -164.2 kJ 164.2 kJ 135.5 kJ -135.5 kJGiven that H,(g) + F,(g) –→ 2 HF(g) AHan = -546.6 kJ 2H,(g) + O,(g) –→ 2H,0(1) AHin = -571.6 kJ calculate the value of AHan for 2F, (g) + 2 H,O(1) → 4 HF(g) + O,(g) ΔΗΚ kJGiven that H, (g) + F,(g) → 2 HF(g) AHn = -546.6 kJ. 2 H, (g) + 0,(g) 2H,O(1) AHn = -571.6 kJ calculate the value of AHxn for 2 F,(g) + 2 H,O(1) 4 HF(g) + O,(g) AHn = rxn kJ FEB étv 23
- Given the reactions, X(s) + ¿0,(g) – XO(s) AH = -527.1 kJ XCO,(s) → XO(s) + CO,(g) ΔΗ +261.3 kJ what is AH for this reaction? X(s) + ¿0,(g) + CO,(g) XCO,(s) ΔΗ- kJExplain the significance of studying the second law of thermodynamics.Provided the following information determine AH formation of C2H6(g). C(graphite) + O2(g) CO2(g) AH = -393.5 kJ > H2(g) + O2(g) – H2O(I) AH = -285.8 kJ C2Ho(g) + 02(g) – 2CO2(g) + 3H2O() ΔΗ = -1560.7 kJ