Spontaneity of Chemical reactions — Formula Sheet
Telangana Open School (TOSS) · Class 12 · Chemistry
6 formulas from Spontaneity of Chemical reactions (Telangana Open School (TOSS) Class 12 Chemistry) on one page, grouped by topic.
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Formulas and Key Relations
Entropy and Second Law
ΔS = q_rev / T
Entropy in Phase Transitions
Δ_fusS = Δ_fusH / T_fus
Δ_vapS = Δ_vapH / T_b
Gibbs Energy and Prediction of Spontaneity
Change in Gibbs energy
ΔG = ΔH – TΔS.
Entropy Changes and Applications
Phase transitions involve significant entropy changes
ΔS_fus = ΔH_fus / T_m, ΔS_vap = ΔH_vap / T_b.
ΔS_universe = 0 at equilibrium.
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