Answer to Question #348500 in General Chemistry for Grace

Question #348500

One mole nitrogen oxide reacts with oxygen gas to produce a brown gas. Calculate thermochemical equation if 20g of NO completely reacted

Expert's answer

2NO + O₂ = 2NO₂ ∆H= -114 kJ

2NO + O₂ + 114 kJ = 2NO₂

60 g NO — 114 kJ

20 g NO — X

X= 20 * 114 / 60 = 38 kJ

Answer: 38 kJ

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