Stoichiometric amounts of nitrogen gas and hydrogen gas react in a calorimeter to produce 5.00 g of ammonia gas. The calorimeter temperature rises 0.42°C. The calorimeter and water have a combined heat capacity of 32.16 kJ/K. Calculate the heat of formation of ammonia, ΔHf°, in kJ/mol. The formation reaction for ammonia is:
0.5N2(g) + 1.5H2(g) → NH3(g).

Question

Stoichiometric amounts of nitrogen gas and hydrogen gas react in a calorimeter to produce 5.00 g of ammonia gas. The calorimeter temperature rises 0.42°C. The calorimeter and water have a combined heat capacity of 32.16 kJ/K. Calculate the heat of formation of ammonia, ΔHf°, in kJ/mol. The formation reaction for ammonia is:
0.5N2(g) + 1.5H2(g) → NH3(g).

hayhayz · Answer

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