Use the following enthalpies of formation:
∆Hf [Zn(s)] = 0 KJ/mol
∆Hf [ZnCl2(g)]= - 415.1 KJ/mol
∆Hf [HCl(g)] = - 92.31 KJ/mol
∆Hf [H2(g)] = 0 KJ/mol
Determine the change in enthalpy for: Zn(s) + 2 HCl(g) → 2 ZnCl2(g) + H2(g) ∆H= ?
Use the following enthalpies of formation: ∆Hf [Zn(s)] = 0 KJ/mol ∆Hf [ZnCl2(g)]= - 415.1 KJ/mol...
3. You are given the following standard enthalpies of formation at 25°C. HF (aq) -320.1 kJ/mol OH(aq) -230.0 kJ/mol F (aq) -332.6 kJ/mol H:0 (1) -285.8 kJ/mol a. Calculate the standard enthalpy of neutralization of HF (aq) HF (aq) + OH(aq) F (aq) + H20 (1) b. Using the value of -56.2 kJ/mol as the standard enthalpy change for the reaction H' (aq) + OH(aq) - H20 (1) calculate the standard enthalpy change for the reaction HF (aq) - H(aq)...
Use a standard enthalpies of formation values below to determine the change in enthalpy for each of these reactions. SHOW WORK PLEASE. Reaction: NaOH(s) + HCl(g) →NaCl(s) + H2O(g) Compound ∆Hf (kJ/mol) NaOH(s) -426.7 HCl(g) -92.3 NaCl(s) -411.0 H2O(g) -241.8
The standard enthalpy change for the following reaction is -415 kJ at 298 K. Zn(s) + Ch(g) → ZnCl2() AH° = -415 kJ What is the standard enthalpy change for the reaction at 298 K? ZnCl(s) — Zn(s) + Cl2(g) The standard enthalpy change for the following reaction is -50.6 kJ at 298 K. N2H40 - N2(g) + 2 H2(g) AH° = -50.6 kJ What is the standard enthalpy change for this reaction at 298 K? N2(g) + 2 H2(g)...
For the reaction: H2(g)+C2H4(g)-->C2H6(g) Bond & Bond Enthalpy H-H 436.4 kJ/mole C-H 414 kJ/mol C-C 347 kJ/mol C=C 620 kJ/mol Substance & delta Hf H2 0 C2H4 52.3 C2H6 -84.7 (a) estimate the enthalpy of reaction, using the bond enthalpy values from the table in kJ/mol (b) Calculate the enthalpy of reaction, using standard enthalpies of formation
4. Use a standard enthalpies of formation values below to determine the change in enthalpy for each of these reactions. Reaction: NaOH(s) + HCl(g) → NaCl(s) + H2O(g) Compound NaOH(s) HCl(g) NaCl(s) H2O(g) AHF (kJ/mol) -426.7 -92.3 -411.0 -241.8
A scientist measures the standard enthalpy change for the following reaction to be - 87.7 kJ : 2HBr(g) + Cl2(g)— 2HCl(g) + Bra(s) Based on this value and the standard enthalpies of formation for the other substances, the standard enthalpy of formation of HCl(g) is kJ/mol CH4() + H2O(g)_3H2(g) + CO(g) Based on this value and the standard enthalpies of formation for the other substances, the standard enthalpy of formation of H2O() is kJ/mol Given the standard enthalpy changes for...
A scientist measures the standard enthalpy change for the following reaction to be -2847.0 kJ: 2C2H6(g) + 7 02(g) —4CO2(g) + 6H2O(g) Based on this value and the standard enthalpies of formation for the other substances, the standard enthalpy of formation of CzH6(g) is kJ/mol. A scientist measures the standard enthalpy change for the following reaction to be -15.0 kJ : Ca(OH)2(aq) + 2 HCl(aq) +CaCl(s) + 2 H20(1) Based on this value and the standard enthalpies of formation for...
10. (10 points) Use standard enthalpies of formation listed in the attached table to find AH° values for the following reaction at 25°C. NH3(g) + HCl(g) + NH4Cl (s) Substance NH3(g) HCl(g) NHACI (s) AH f (kJ/mol) -45.9 -92.31 -314.43 Is the reaction endothermic or exothermic?
11.7 points The standard enthalpies of formation for several substances are given below: CO(g) -100 kJ/mol H2(g) 0 kJ/mol H20(1) -205.8 kJ/mol H2O(g) -211.8 kJ/mol C2H5OH(I) -217.7 kJ/mol C2H5OH(g) -205.1 kJ/mol Determine the AHⓇ for the reaction below. 2 CO(g) + 4 H2(g) → C2H5OH(g) + H2O(9)
need help with 2. Use the following enthalpies of formation to calculate an approximate enthalpy of reaction, AHrxn for: (5 pts) C3H8 (g) + 502 (g) → 3CO2 (g) + 4 H20 (1) C(s) + O2 (g) - CO2 (g); AH = - 393.5 kJ/mol H2(g) + 42 02 (g) - H20 (1); AH = - 285.5 kJ/mol 3 C(s) + 4 H2(g) → C3H8 (g); AH r = - 103.8 kJ/mol