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brayden2275
31.08.2020 •
Chemistry
2 N2 (g) + O2 (g) ---> 2 N2O (g) H= +163.2 kj/mol How much heat is required to produce 25.0 g of N2O by this reaction? Show all calculations.
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Ответ:
46.3 kJ
Explanation:
Step 1: Write the thermochemical equation
2 N₂(g) + O₂(g) ⇒ 2 N₂O(g) ΔH= +163.2 kJ/mol
Step 2: Calculate the moles corresponding to 25.0 g of N₂O
The molar mass of N₂O is 44.01 g/mol.
25.0 g × (1 mol/44.01 g) = 0.568 mol
Step 3: Calculate the heat released when 0.568 moles of N₂O are produced
According to the thermochemical equation, 163.2 kJ are required per 2 moles of N₂O.
0.568 mol × (163.2 kJ/2 mol) = 46.3 kJ
Ответ: