4. Consider the following balanced reaction (8 points) 3 NO2(g) + H2O(l) → 2 HNO3(aq) +...
Consider the following chemical reaction. NH3(g) + 2 O2(g) → HNO3(aq) + H2O(l) Calculate the change in enthalpy (ΔH) for this reaction, using Hess' law and the enthalpy changes for the reactions given below. (1a) 4 NH3(g) + 5 O2(g) → 4 NO(g) + 6 H2O(l); ΔH = −1166.0 kJ/mol (2a) 2 NO(g) + O2(g) → 2 NO2(g); ΔH = −116.2 kJ/mol (3a) 3 NO2(g) + H2O(l) → 2 HNO3(aq) + NO(g); ΔH = −137.3 kJ/mol
Calculate the ΔG°rxn using the following information. 2 HNO3(aq) + NO(g) → 3 NO2(g) + H2O(l) ΔG°rxn = ? ΔG°f (kJ/mol) -110.9 87.6 51.3 -237.1
1. Calculate ΔHnn for the following reaction. 3NO2(g) + H2O(l) → 2 HNO3(aq) + NO(g) Given. AHof (NO2(g)) = +33.2 klymol AHof (H20(1)) =-187.8 ki/mol AHof (HNO3(aq)) =-207.0 kJ/mol AHof (NO(g)) = +91.3 kJ/mol
Calculate the DGorxn using the following information. 2 HNO3(aq) + NO(g) à 3 NO2(g) + H2O(l) DHof (kJ/mol) -207 91.3 33.2 -285.8 So (J/mol . K) 146 210.8 240.1 70.0
Consider the following balanced reaction. How many grams of water are required to form 75.9 g of HNO3? Assume that there is excess NO2 present. The molar masses are as follows: H2O = 18.02 g/mol, HNO3 = 63.02 g/mol. 3 NO2(g) + H2O(l) → 2 HNO3(aq) + NO(g) Answer 26.5 g H2O 10.9 g H2O 43.4 g H2O 21.7 g H2O 38.0 g H2O
Calculate the ΔG°rxn using the following information. 2 HNO3(aq) + NO(g) → 3 NO2(g) + H2O(l) ΔG°rxn = ? ΔH°f (kJ/mol) -207.0 91.3 33.2 -285.8 S°(J/mol∙K 146.0 210.8 240.1 70.0 -151 kJ +50.8 kJ -186 kJ +222 kJ -85.5 kJ
According to the following balanced reaction, how many liters of NO2 at 2.20 atm and 35° C would be needed to form 1.50 L of 0.433 M HNO3? 3 NO2(g) + H2O(l) → 2 HNO3(aq) + NO(g)
According to the following balanced reaction, how many moles of NO are formed from 2.50 moles of NO2 if there is plenty of water present? 3 NO2(g) + H2O(l) → 2 HNO3(aq) + NO(g)
Write the balanced redox reaction for each of the following: a. H2O2(aq) + Fe2+(aq) → H2O(l) + Fe3+(aq) in acidic solution b. Cu(s) + HNO3(aq) → Cu2+(aq) + NO(g) + H2O(l) in acidic solution c. Bi(OH)3(s) + SnO22–(aq) → Bi(s) + SnO32–(aq) in basic solution
Calculate ΔG°(in kJ/mol) for the reaction NO2(g) + H2O(l) --> HNO3(l) + NO(g). ( unbalanced) Substance ΔGfo(kJ/mol) NO2(g) 51.8 NO(g) 86.7 HNO3(l) -79.9 H2O(l) -237.2 Write answer to two significant figures and correct sign.