2. (30 pts) Hydrogen peroxide (H2O2) liquid has been used as a monopropellant in rocket engines....

 

Transcribed Image Text:

2. (30 pts) Hydrogen peroxide (H2O2) liquid has been used as a monopropellant in rocket engines. When exposed to a catalyst, it exothermically decomposes into water vapor (H2O gas) and oxygen (O2). Information for these reactants and products can be found in the table below, where the variables have their usual meaning. (Note the units of Cp) Species HO2 (1) H2O (1) HO (g) O2 (g) Ah (kJ/kmol) -187,690 -285,830 -241,830 0 Cp (kJ/kmol-K) 0 0 33.59 29.38 MW (g/mol) 34 18 18 32 a. (10pts) Write the balanced chemical reaction and determine the heat of reaction for hydrogen peroxide decomposition into water vapor and oxygen. b. (15pts) Predict the flame temperature (Tc), molecular weight (MW), specific gas constant (R), specific heat at constant pressure (Cp), and specific heat ratio (y) for hydrogen peroxide decomposition products. c. (5pts) Estimate a nozzle exhaust velocity based on your results in (b). 2. (30 pts) Hydrogen peroxide (H2O2) liquid has been used as a monopropellant in rocket engines. When exposed to a catalyst, it exothermically decomposes into water vapor (H2O gas) and oxygen (O2). Information for these reactants and products can be found in the table below, where the variables have their usual meaning. (Note the units of Cp) Species HO2 (1) H2O (1) HO (g) O2 (g) Ah (kJ/kmol) -187,690 -285,830 -241,830 0 Cp (kJ/kmol-K) 0 0 33.59 29.38 MW (g/mol) 34 18 18 32 a. (10pts) Write the balanced chemical reaction and determine the heat of reaction for hydrogen peroxide decomposition into water vapor and oxygen. b. (15pts) Predict the flame temperature (Tc), molecular weight (MW), specific gas constant (R), specific heat at constant pressure (Cp), and specific heat ratio (y) for hydrogen peroxide decomposition products. c. (5pts) Estimate a nozzle exhaust velocity based on your results in (b).