28. Write the equation that corresponds to the standard enthalpy of formation for each of the following compounds: a) Nal(s), b) HCIO,(g), and c) CH;OCH;(g)

Determine the value of heat of reaction for the following: CI(g) +03(g) → CIO(g) +0,(g) AH°rxn = kJ 27 OF 36 COUE

The first step in the production of nitric acid from ammonia involves the oxidation of NH3. 4 NH3(g) + 5 O₂ (g) → 4 NO(g) + 6 H₂O(g) 2 a Use standard enthalpies of formation from the table below to calculate the standard enthalpy change for this reaction. Species AfH (kJ/mol) NH3(g) -45.90 NO(g) +90.29 H₂O(g) -241.83 Standard enthalpy change Submit = kJ/mol-rxn

Given the thermochemical equations for reactions (1),(2) and (3) below, calculate the enthalpy change for reaction (4).

Given the following two reactions:(1)Fe(s) + Cl2(g)->FeCl2(s) H(1) = -341.8 kJ(2)Hg(l) + Cl2(g)->HgCl2(s) H(2) = -224.3 kJcalculate the enthalpy change for the following reaction:(3) FeCl2(s) + Hg(l)-> Fe(s) + HgCl2(s) H(3) = kJ

3. Write a balanced chemical reaction for the synthesis of methane (CH4) and liquid water from hydrogen and acetic acid (CH3COOH) and calculate the standard enthalpy of the reaction by using the appropriate enthalpies of formation on page 308 or Appendix 4 in the textbook.

Use standard enthalpies. of formation to calculate the Hrxn for the following reaction.  Cr2O3(s) + 3CO(g) > 2Cr(s) + 3CO2(g)

Explain in detail what standard enthalpy changes of formation and combustion are, and the differences between then. Use relevant examples in your answer.