Joshua Edwards
Chemistry 1202
Dr. Hopkins
Exam 1 Formulas
𝐸potential = 𝑚𝑔ℎ
𝐸kinetic =
1
𝑚𝑣 2
2
𝐸sys = 𝐸potential + 𝐸kinetic
∆𝐸sys = 𝑞sys + 𝑤sys
(∆𝐸 = 𝑞 + 𝑤)
𝑞 = 𝑛 ∙ ∆𝐻rxn with constant pressure
𝑞 = 𝑛 ∙ ∆𝐸rxn with constant volume
𝑤 = 𝑃∆𝑉 = −∆𝑛𝑅𝑇 for ideal gasses
𝑞 = 𝐶𝑠 ∙ 𝑚 ∙ ∆𝑇 with changing temperature
𝑞sys = −𝑞surr
𝑞rxn = −𝑞cal
𝑛 ∙ ∆𝐻rxn = −𝐶𝑠 ∙ 𝑚 ∙ ∆𝑇 for a constant pressure calorimeter
𝑛 ∙ ∆𝐸rxn = −𝐶𝑇 ∙ ∆𝑇 for a constant volume (bomb) calorimeter
𝑞total = 𝑞solid + 𝑞fus + 𝑞liquid + 𝑞vap + 𝑞gas
= 𝐶solid 𝑚∆𝑇 + 𝑛∆𝐻fus + 𝐶liquid 𝑚∆𝑇 + 𝑛∆𝐻vap + 𝐶gas 𝑚∆𝑇 for complex heat
∆𝐻rxn = ∑ (𝑛𝑖 ∙ (∆𝐻𝑓 ) )
𝑖
𝑖 products
− ∑ (𝑚𝑗 ∙ (∆𝐻𝑓 ) )
𝑗
𝑗 reactants