Question

Hydrazine, N2H4 has literally been used as rocket fuel. It reacts exothermically with oxygen as shown below: AH=-577 N2H4 (8) + O2(g) →N2 (g) + 2 H2O(g) kJ/mol What quantity of heat is released when 1.00 kg of hydrazine is combusted? 18.0 kJ 6 5.70 x 105 kg 0 1.80 x 10 kg

Answer 1

Hydrazine, N2H4 has literally been used as rocket fuel. It reacts exothermically with oxygen as shown below: AH = -577 N2H4 (g) + O2(g) → N2 (8) + 2 H20 (3) kJ/mol What quantity of heat is released when 1.00 kg of hydrazine is combusted? 18.0 kJ 5.70 x 105 kJ 0 1.80 x 10 kJ = 31.25 moles molecular weight of hydragine = 32 gram/mole I kg hydrasine 1000g 32g/mol {wrote: 4 H is the amount of heat liberated when 1 mole hydrazine is combusted.} Hence amount of heat liberated when lkg (31.25 mot) of Ng Hy is combusted = -577 kJ X 31-25 mol = 18031 KJ (negative sign Answer = 1.8 x 104 kJ tter) of mol does at matter

Answer: 1.80 x 10⁴ kJ