Chemistry - Thermochemistry - Calorimetry - Calorimetry Calculations

3 worked examples. Example 1: 'In a coffee-cup calorimeter, 50mL of 1M HCl is mixed with 50mL of 1M NaOH. Temperature rises from 22°C to 28.5°C. Find ΔH_neut.' Work: q = mcΔT = (100g)(4.18)(6.5) = 2717 J = 2.72 kJ. Moles reacted = 0.050 mol. ΔH = -q/n = -2.72/0.050 = -54.3 kJ/mol. (Negative because