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The standard molar entropy at pressure = is usually given the symbol S°, and has units of joules per mole per kelvin (J⋅mol −1 ⋅K −1). Unlike standard enthalpies of formation, the value of S° is absolute. That is, an element in its standard state has a definite, nonzero value of S at room temperature. The entropy of a pure crystalline ...
The standard state of a material (pure substance, mixture or solution) is a reference point used to calculate its properties under different conditions.A degree sign (°) or a superscript Plimsoll symbol (⦵) is used to designate a thermodynamic quantity in the standard state, such as change in enthalpy (ΔH°), change in entropy (ΔS°), or change in Gibbs free energy (ΔG°).
Standard molar entropy, S o solid: 45.56 J/(mol K) Heat capacity, c p: 118.4 J/(mol K) at 0 °C Liquid properties Std enthalpy change of formation, Δ f H o liquid +48.7 kJ/mol Standard molar entropy, S o liquid: 173.26 J/(mol K) Enthalpy of combustion, Δ c H o –3273 kJ/mol Heat capacity, [2] c p: 134.8 J/(mol K) Gas properties Std enthalpy ...
Standard molar entropy, S o solid? J/(mol K) Heat capacity, c p? J/(mol K) Enthalpy of transition, Δ trs H o: 6.7 kJ/mol at –87.0 °C crystal II → crystal I Entropy of transition, Δ trs S o: 36 J/(mol·K) at –87.0 °C crystal II → crystal I Liquid properties Std enthalpy change of formation, Δ f H o liquid –156.4 kJ/mol Standard ...
Std entropy change of vaporization, Δ vap S o? J/(mol·K) Solid properties Std enthalpy change of formation, Δ f H o solid: −411.12 kJ/mol [2] Standard molar entropy, S o solid: 72 J/(mol·K) Heat capacity, c p: 50 J/(mol·K) ; 0.853 J/(g·k) [2] Liquid properties Std enthalpy change of formation, Δ f H o liquid: −385.92 kJ/mol Standard ...
Aniline is a benzenoid compound. The NH 2 group attached to the benzene ring means that there is a lone pair of electrons that can enter into conjugation with the benzene ring resulting in delocalization in the aniline. Aniline absorbs in the K (220 - 250 nm) and the B (250 - 290 nm) bands exhibited by benzenoid compounds.
Standard molar entropy, S o liquid: 263.47 J/(mol K) Enthalpy of combustion, Δ c H o liquid –3509 kJ/mol Heat capacity, c p: 167.19 J/(mol K) at 25 °C Gas properties Std enthalpy change of formation, Δ f H o gas –146.8 kJ/mol Standard molar entropy, S o gas: 347.82 J/(mol K) Enthalpy of combustion, Δ c H o gas –3535 kJ/mol Heat ...
Std entropy change of vaporization, Δ vap S o? J/(mol·K) Solid properties Std enthalpy change of formation, Δ f H o solid: −946.30 kJ/mol Standard molar entropy, S o solid? J/(mol K) Heat capacity, c p? J/(mol K) Liquid properties Std enthalpy change of formation, Δ f H o liquid: −934.12 kJ/mol Standard molar entropy, S o liquid: 123.35 ...