Calculate the entropy change for the following process possessing- - H transition -2090Jmol-1 1mole Sn - - 13 o C - 1mole Sn - - 30 o C

1mole Sn( α , 13 ^ o C ) ⇌ 1mole Sn( β , 30 ^ o C ) T _ trans =13+273=286K Δ S _ trans =Δ H_trans T_trans(K) = 2090J/mol 286K Δ S _ trans ...

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Entropy

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Question

Calculate the entropy change for the following process possessing.
$Δ H_{t r a n s i t i o n} = 2090 J {m o l}^{- 1}$
$1 m o l e S n (α, 13^{o} C) ⇌ 1 m o l e S n (β, 30^{o} C)$

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α - T i n 1 m o l a t 1 a t m ⇌ β - T i n 1 m o l a t 1 a t m

13^{o} C

(Δ H_{t r a n s} = 2090 J {m o l}^{- 1})

64 g

1

0.25

30^{o} C

H_{2} O (I, 1.01325 b a r) \to H_{2} O (g, 0.101325 b a r)

Δ_{v a p} H (H_{2} O) = 37.3 k J {m o l}^{- 1}

Δ H_{v a p o u r}

40.8 k J {m o l}^{- 1}

373 K

Calculate the entropy change accompanying the following change of state

$5 m o l$ of $O_{2} (27^{\circ} C, 1 a t m) \to 5 m o l$ of $O_{2} (117^{\circ} C, 5 a t m)$

$C_{P}$ for $O_{2} = 6.95 c a l d e g^{- 1} m o l^{- 1}$

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