When 20.00 moles of H2(g) reacts with 10.00 mol of O2(g) to form 20.00 mol of H2O(1) at 25°C and a constant pressure of...
When 20.00 moles of H2(g) reacts with 10.00 mol of O2(g) to form 20.00 mol of H2O(l) at 25°C and a constant pressure of 1.00 atm. If 1366 kJ of heat are released during this reaction, and PΔV is equal to -74.00 kJ, then ΔH° = -1366 kJ and ΔE° = -1292 kJ.ΔH° = +1366 kJ and ΔE° = +1440 kJ.ΔH° = -1366 kJ and ΔE° = -1440 kJ.ΔH° = +1366 kJ and ΔE° = +1292 kJ.
When H2(g) reacts with O2(g) according to the following reaction, 242 kJ of energy are evolved for each mole of H2(g) that reacts. Complete the following thermochemical equation. 2H2(g) + O2(g)— 2H2O(g) AH- The following information is given for bismuth at latm: T = 1627.00°C T. = 271.00°C Specific heat solid = 0.1260 J/g °C Specific heat liquid = 0.1510 J/g °C AHvap (1627.00°C) = 822.9 J/g AH (271.00°C) = 52.60 Jig A 38.40 g sample of liquid bismuth at...
When 56.8 g of lead reacts with 3.50 L of oxygen gas, measured at 1.00 atm and 25.0 0 degrees * C , 60.1 kl of heat is released at constant pressure. What is AH for this reaction? (R = 0.0821L * atm / (Kmol)) 2Pb(s)+O 2 (g) 2PbO(s) ) When 56.8 g of lead reacts with 3.50 L of oxygen gas, measured at 1.00 atm and 25.0°C. 60.1 kJ of heat is released at constant pressure. What is AH°...
How much heat is absorbed/released when 20.00 g of NH3(g) reacts in the presence of excess O2 (g) to produce NO (g) and H2O (l) according to the following chemical equation? 4NH3 (g) + 5O2 (g) ---> 4NO (g) +6H2O (l) Δ H: +1168 kJ a. 342.9 kJ of heat are absorbed. b. 342.9 kJ of heat are released. c. 1372 kJ of heat are absorbed. d. 1372 kJ of heat are released. Please explain your answer.
5. Hydrogen gas reacts with oxygen to form water. 2 H2(g) + O2(g) → 2 H2O(g), AH=-483.5kJ Determine the mass of oxygen and hydrogen needed to produce 483 J of heat without leaving any reactant. [0.5] 6. Use standard enthalpies of formation from Appendix II.B from at the end of the textbook to determine AHºrxn for the combustion reaction of hexane (C6H14). [0.5]
DH=DUIDIN 1. In following reaction H2(g) + Cl2(g) + 2HCl(g) AH=- 184.6 kJ/mol If 4 moles of H2 react with 4 moles of Cl, to form HCI. Calculate AU for this reaction, assumimg the reaction goes to completion against a pressure of 138.0 atm at constant volume. (IL atm = 101.3 J) pranai DU=q tw A) -738.4 kJ B) -369.2 kJ C) 138.0 kJ D) 184.6 kJ E) 244.5 kJ 4H =-92.3 ou-bH
problem #9 Calculate the equilibrium constant for the following reaction at 25°C. 2H2(g) + O2(g) 2H20cv) Given the following standard free-energy: H2O , -237.2 KJ/mol at 25°C. Problem #10. Given the following data at 25°C: substance sº (J/mol.K) AH', (KJ/mol) 240.45, 33.8 304.33 9.66 NO 249) N2O160) (a) Calculate the value of A Gº for the following reaction at 25°C: 2 NO2(9) N20 (9) (b) Is the formation of NO a spontaneous process at 25°C and standard-state conditions? (a) What...
6. Given H2(g) + 22 O2(g) → H2O(1), AH° = -286 kJ/mol, Determine the standard enthalpy change for the reaction 2H2O(l) → 2H2(g) + O2(g) (2 pt)
1. A degreasing agent, tetrachloroethylene, isp casing agent, retrachloroethylene, is produced in the reaction CHI(g) + 4 HCl(g) + 2 O2(g) → CC (1) A rk/mol): 52.26 .92.31 0 a) determine AH"for CCl4(1) 4 HCl(g) + 2 O2(g) → C-CL) + 4 H O(l) - 285.8 AH = .878.5 kJ a) AHⓇ for CC (1) = -52.28 kJ b) How much heat (kJ) would be evolved when amounts of HCl and O:)? w much heat (kJ) would be evolved when...
Hydrogen reacts with nitrogen to form ammonia (NH3) according to the reaction 3 H2(g) + N2(g) → 2 NH3(g). The value of AH is -92.38 kJ/mol, and that of AS is -198.2 J/mol · K. Determine AG at 50.00°C for the preparation of 2 moles of NH3. (answer in kJ/mol) Answer: -56.723 Check