In some bacteria, glycine is produced from ammonia by thereaction Calculate the

Question

In some bacteria, glycine is produced from ammonia by thereaction Calculate the standard enthalpy change for the synthesis ofglycine from ammonia. For glycine, Hf = -537.2 kJ/mol. Assume T =298.15 K Calculate the standardenthalpy change for the synthesis of glycine from nitrogen, water,oxygen, and methane. I need help with highlight part. Thanks! In some bacteria, glycine is produced from ammonia by thereaction Calculate the standard enthalpy change for the synthesis ofglycine from ammonia. For glycine, delta Hf = -537.2 kJ/mol. Assume T =298.15 K Calculate the standardenthalpy change for the synthesis of glycine from nitrogen, water,oxygen, and methane. I need help with highlight part. Thanks!

Explanation / Answer

          N2 (g)+ 2 H 2 O (l)+ O2(g) + 4CH4 (g) -----> 2 NH 2CH2COOH (s) The enthalphy of formation of CH4 (g) , HCH4 = -74.87 KJ / mol The enthalphy of formation of H2O (l) , HH2O = -285.83 KJ / mol The enthalphy of formation of glycine , Hf = -537.2 KJ / mol H of the reaction is H = H products -H reactants                                      = 2H f - ( H N2 +2 * H H2O  + HO2 + 4 * H CH4 )                                        =2 * (-537.2) - ( 0 + 2 * -285.83 + 0 + 4* -74.87 )                                          =  -203.26KJ/ mol       Note : Since the enthalphy of formations of elements in theirstandard staes is zero

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