At 298 K -f H- element - 0-If true 1 else 0

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Difference between Internal Energy and Enthalpy

At 298 K Δ...

Question

At $298 K$
$Δ_{f} H^{⊖} e l e m e n t = 0$ .
If true 1 else 0
0

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298 K

Δ_{f} S^{⊖} e l e m e n t = 0

298 K

Δ_{f} G^{⊖} e l e m e n t = 0

Δ_{f} H^{⊖}

C O

Δ_{c} H^{⊖} (g r a p h i t e) - Δ_{c} H^{⊖} (C O)

u_{n} = ∣ ∣ ∣ ∣ ∣ ∣ ∣ ∣ ∣ \begin{matrix} a_{1} & 1 & 0 & 0 & . . . & . . . & 0 - 1 & a_{2} & 1 & 0 & . . . & . . . & 0 0 & - 1 & a_{3} & 1 & . . . & . . . & 0 . . . & . . . & . . . & . . . & . . . & . . . & . . . 0 & 0 & . . . & . . . & - 1 & a_{n - 1} & 1 0 & 0 & . . . & . . . & 0 & - 1 & a_{n} \end{matrix} ∣ ∣ ∣ ∣ ∣ ∣ ∣ ∣ ∣

u_{n} = a_{n} u_{n - 1} + u_{n - 2}

G_{f}^{0} o f {A l}_{2} O_{3}

a t

298 K = - {1582 k J m o l}^{- 1}; G_{f}^{0} o f {N a}_{2} O (s) a t 298 K = - 377 k J {m o l}^{- 1}

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