Calculate the entropy change ( J molK ) of the given reaction. The molar entropies [J/K-mol] are given in brackets after each substance. 2 PbS (s ) (91.2 )+3O_2 ( g ) (205.1 ) ⟶2 PbO (s ) (66.5 )+2 S…

Question

Calculate the entropy change ( J molK ) of the given reaction. The molar entropies [J/K-mol] are given in brackets after each substance. 2 PbS (s ) (91.2 )+3O_2 ( g ) (205.1 ) ⟶2 PbO (s ) (66.5 )+2 SO_2 ( g ) (248.2 )

Accepted Answer

Correct answer: B. (b)∆S_reaction = 2 (66.5) + 2 (248.2) – 2 (91.2) – 3 (205.1) = 168.3 J/mole K

$Calculate the entropy change (\frac{J}{mol} K) of the given reaction. The molar entropies [J/K-mol] are given in brackets after each substance. 2 PbS (s) (91.2) + 3 O_{2} (g) (205.1) ⟶ 2 PbO (s) (66.5) + 2 SO_{2} (g) (248.2)$

Solution

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