Homework Assignment 3 Show all work and relevant equations for full credit, in your own hand written calculations (no typing). Look up the equations and constants that you need. Use a separate sheet for the work or use this sheet with problems spaced apart; but please upload this sheet along with your work. 1a. Calculate the reaction enthalpy under standard conditions (H) for the synthesis of hydrogen bromide gas (HBr) via the following reaction. H2(g)+Br11(l)a2HBr(g) Use a Hess's law approach, i.e. calculate the value of H by combining the following reactions and reaction enthalpies. Reaction Enthalpy in kJ/molrxn NH(g)+HBr(g)aNH(Br(s)N2(g)+3H((g)a2NH(g)N2(g)+4H2(g)+Br,(l)a2NH,Br(s)H=188.32H=92.22H=541.6 1b. Is the reaction in Part a endothermic or exothermic? Predict the sign (+ or -) of DS- for the reaction. What is the basis for your prediction? Calculate DS" for the reaction from tabulated standard entropy values, e.g. 'atom combination' (AC) or 'formation' (F) data. Now calculate the Gibbs free energy under standard state conditions by combining values of enthalpy and entropy. Confirm your value for DG using the tables of DG, or DGC