Data given for the following reaction is as follows:

  F e O ( s ) + C ( g r a p h i t e ) F e ( s ) + C O ( g )          

Substance  Δ f H 0 ( k J m o l 1 ) Δ S 0 ( J m o l 1 K 1 )                                         

FeO(s)                                                             -266.3                               57.49

C(graphite)                                 0                                         5.74

Fe(s)                                        0                                         27.28

CO(g)                                      -110.5                               197.6

The minimum temperature in K at which the reaction becomes spontaneous is______

(Integer answer)

3 Views|Posted 7 months ago
Asked by Shiksha User
1 Answer
A
7 months ago

Minimum temperature at which reaction becomes spontaneous is,

  T m i n = Δ H 0 Δ S 0             

Δ H o m i n = [ Δ H f o ( F e ) + Δ H f o ( C O ) ] [ Δ H f o ( F e O ) + Δ H f o ( C ) ]

= [ 0 1 1 0 . 5 ] [ 2 6 6 . 3 + 0 ]

= 1 5 5 . 8 K J / m o l

Δ S ° = [ Δ S ° ( F e ) + Δ S o ( C O ) ] [ Δ S ° ( F e O ) + Δ S ° ( C ) ]

= ( 2 7 . 2 8 + 1 9 7 . 6 ) ( 5 7 . 4 9 + 5 . 7 4 ) J / m o l K

= 1 6 1 . 6 5 J / m o l K

T m i n = 1 5 5 . 8 * 1 0 3 1 6 1 . 6 5 K = 9 6 3 . 8 K 9 6 4 K                        

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Chemistry Ncert Solutions Class 11th 2023

Chemistry Ncert Solutions Class 11th 2023

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