1. H₂CO(g) + O₂(g)CO₂(g) + H₂O(l) Using standard thermodynamic data at 298K, calculate the free energy change when 1.61 moles of H₂CO(g) react at standard conditions. G_rxn =__________ kJ

2. H₂(g) + F₂(g)2HF(g) Using standard thermodynamic data at 298K, calculate the free energy change when 1.810 moles of H₂(g) react at standard conditions. G_rxn = ________kJ

3. 2H₂O(l)2H₂(g) + O₂(g) Using standard thermodynamic data at 298K, calculate the free energy change when 2.07 moles of H₂O(l) react at standard conditions. G_rxn = ______________kJ