The Δ H f 0 for C O 2 ( g ) , C O ( g ) and H 2 O ( g ) are - 393.5 , - 110.5 and - 241.8 k J m o l - 1 respectively. The standard enthalpy changes ( i n k J ) for the reaction C O 2 g + H 2 g → C O g + H 2 O ( g ) is

Question

The Δ H f 0 for C O 2 ( g ) , C O ( g ) and H 2 O ( g ) are - 393.5 , - 110.5 and - 241.8 k J m o l - 1 respectively. The standard enthalpy changes ( i n k J ) for the reaction C O 2 g + H 2 g → C O g + H 2 O ( g ) is, 524.1, 41.2, - 262.5, – 41.2

MARKS App · Accepted Answer

Δ H r e a c t i o n ° = Δ H f ° C O + Δ H f ° H 2 O , g - Δ H f ° C O 2 , g = – 110.5 – 241.8 + 393.5 = 41.2

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