Large quantities of hydrogen are needed for the synthesis of ammonia. One prepar
ID: 937196 • Letter: L
Question
Large quantities of hydrogen are needed for the synthesis of ammonia. One preparation of hydrogen involves the reaction between carbon monoxide and steam at 300 C the presence of a copper zinc catalyst. Co(g) + H2O(g) --> CO2(g) + H2(g) A)calculate delta H and delta S for the reaction at 25 Celsius B)what is the Delta Gt^o at 300 C assume H and S are temp independent C)at 300 C is the reaction product or reactant favored? Large quantities of hydrogen are needed for the synthesis of ammonia. One preparation of hydrogen involves the reaction between carbon monoxide and steam at 300 C the presence of a copper zinc catalyst. Co(g) + H2O(g) --> CO2(g) + H2(g) A)calculate delta H and delta S for the reaction at 25 Celsius B)what is the Delta Gt^o at 300 C assume H and S are temp independent C)at 300 C is the reaction product or reactant favored? Co(g) + H2O(g) --> CO2(g) + H2(g) A)calculate delta H and delta S for the reaction at 25 Celsius B)what is the Delta Gt^o at 300 C assume H and S are temp independent C)at 300 C is the reaction product or reactant favored?Explanation / Answer
a)
Hrxn = Hproducts - Hreactants
Hrxn = (-393.51 - 0 ) - (?110.53 + -241.826 ) = -41.15 kJ
Hrxn = -41.15 kJ
Srxn = Sproducts - Sreactants
Srxn = (213.6 +130.6 ) - (197.6 + 188.7) = -42.1 J/K
Srxn = -42.1 J/K
b)
Calculate G at 300C, assume H and S don't depend on T
G = H-TS
G = -41.15 kJ - (300+273 K) ( -42.1 J/K)/1000 = -17.03 kJ
G = -17.03 kJ
C)
IF G<0, the reaction favours forward, or it is spontaneous.. Singe G < 0 in this case, it will favour the products!
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