Determine the enthalpy change for the reaction 2

1. What is the enthalpy of reaction per mole of HCl (g) in the following reaction.( Don't have to explain why) 4HCl (g) + O2 (g) → 2Cl2 (g) + 2H2O + 114.4 kJ a) -457.6 kJ / mol b) -114.4 kJ / mol c) -28.6 kJ / mol d) +114.4 kJ / mol 2. The standard enthalpy of formation of a compound represents: a) The thermal energy released by the decomposition of one mole of this compound. b) The change in enthalpy when a mole of this compound is formed from its elements under standard conditions. c) The change in enthalpy when one mole of an element turns into a compound. d)The thermal energy released by the complete combustion of one mole of this compound. e) The enthalpy change of the phase transition of one mole of this compound.

Consider an endothermic reaction that takes place in 303 mL of solution.  If the reaction requires 4,468 J of energy and the initial temperature of the solution is 26.7, what will the final solution temperature be? (3 sf) The density of solution is 1.00 g/mL and the specific heat of the solution is the same as that of water.

Using standard heats of formation, calculate the standard enthalpy change for the following reaction. 2HBr(g) + Cl₂(g) → 2HCl(g) + Br₂(g) AH (HBr(g)) = -36.3 kJ/mol AH (Cl₂ (9)) = 0.0 kJ/mol AH (HCl(g)) = -92.3 kJ/mol AH (Br₂ (9)) = 30.9 kJ/mol AH rxn = kJ

Calculate the enthalpy of reaction for the combustion reaction (in kJ/mol) shown below. Enter your answer without units. ннно: •. Н-С-С—С—С-Ӧ—Н + 50=0 4 0=c=o° + 4 Н—0—Н ннн Average Bond Energy Bond (kJ/mol) H-H 436 H-C 414 H-O 464 C-C 347 C=C 611 C-0 360 C=O 799 0-0 142 O=0 498 If you cannot see the images above,then click here

a) Using standard enthalpies of formation (in Appendix G in your text), calculate the standard enthalpy change (AH°) for the following reaction shown below. (Show all work.) b) Based on your calculation, is the reaction exothermic or endothermic? 2 H2S(g) + SO2(g) --> 3/8 S8(s) + 2 H20(g)

If the reaction 2 H2(g) + O2(g) yields 2 H2O(l) is multiplied by 2 and the given enthalpy change is -286kJ, what will be the final enthalpy change of this reaction?       a) 562 kJ   b) -572 kJ   c) -562 kJ   d) 572 kJ