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