Question

In: Chemistry

Small rocket engines, such as model rockets, contain KClO33 to provide oxygen for the combustion reaction...

Small rocket engines, such as model rockets, contain KClO33 to provide oxygen for the combustion reaction fueling the rocket motor. The relevant reaction for KClO33 is: 2 KClO33(s) → 2 KCl(s) + 3 O22(g)

If 117.0 grams of solid KClO33 are burned in one of these rocket motors, how many liters of gaseous O22 are produced at 1.18 atm of pressure and 550.0 ºC?

Gaseous sulfur dioxide, a component of acid rain, is made as a product of the combustion of sulfur-containing fuels. Calculate the volume of sulfur dioxide produced at 22.4 °C and 0.925 atm by the combustion of 8902 g of fuel that contains 5.55% of sulfur by mass. S88 (s) + 8 O22(g)→ 8 SO22(g)

Solutions

Expert Solution

(1) 2 KClO3(s) ? 2 KCl(s) + 3 O2(g)

Molar mass of KClO3 = At.mass of K + At.mass of Cl + (3xAt.mass of O)

                                = 39+35.5+(3x16)

                                = 122.5 g/mol

So number of moles of KClO3 , n = mass/molar mass

                                                = 117.0 g / ( 122.5(g/mol)

                                                = 0.955 moles

From the balanced reaction ,

2 moles of KClO3 produces 3 moles of Oxygen

0.955 moles of KClO3 produces M moles of oxygen

M = ( 0.955x3) / 2

    = 1.43 moles of Oxygen

Calculation of volume of Oxygen produced :-

We know that ideal gas equation is PV = nRT

Where

T = Temperature = 550.0 oC = 550.0+273 = 823 K

P = pressure = 1.18 atm

n = No . of moles = 1.43 mol

R = gas constant = 0.0821 L atm / mol - K

V= Volume of the gas = ?

Plug the values we get V = (nRT) / P

                                     = 81.9 L

Do the other in the similar manner


Related Solutions

Small rocket engines, such as model rockets, contain KClO3 to provide oxygen for the combustion reaction...
Small rocket engines, such as model rockets, contain KClO3 to provide oxygen for the combustion reaction fueling the rocket motor. The relevant reaction for KClO3 is: 2 KClO3(s) → 2 KCl(s) + 3 O2(g) If 117.0 grams of solid KClO3 are burned in one of these rocket motors, how many liters of gaseous O2 are produced at 1.18 atm of pressure and 550.0 ºC?
A mixture of propane and butane is burned with pure oxygen. The combustion products contain 46.4...
A mixture of propane and butane is burned with pure oxygen. The combustion products contain 46.4 mole% H2O. After all the water is removed from the products, the residual gas contains 69.2 mole% CO2 and the balance O2. It now turns out that the fuel mixture may contain not only propane and butane but also other hydrocarbons. The fuel does not contain oxygen. However, the dry combustion gases still contain 69.2% carbon dioxide. We wish to determine the elemental composition...
A mixture of propane and butane is burned with pure oxygen. The combustion products contain 46.7...
A mixture of propane and butane is burned with pure oxygen. The combustion products contain 46.7 mole% H2O. After all the water is removed from the products, the residual gas contains 68.8 mole% CO2 and the balance O2 a. What is the mole percent of propane in the fuel? b. It now turns out that the fuel mixture may contain not only propane and butane but also other hydrocarbons. The fuel does not contain oxygen. However, the dry combustion gases...
A mixture of propane and butane is burned with pure oxygen. The combustion products contain 46.7...
A mixture of propane and butane is burned with pure oxygen. The combustion products contain 46.7 mole% H2O. After all the water is removed from the products, the residual gas contains 68.6 mole% CO2 and the balance O2 a. What is the mole percent of propane in the fuel?
an unkown hydrocarbon contain carbon hydrogen and oxygen combustion of 1.6 g of the hydrocarbon produces...
an unkown hydrocarbon contain carbon hydrogen and oxygen combustion of 1.6 g of the hydrocarbon produces 1.0286 g h2o and 3.7681 g co2. what is the empiral formula of this compound?
Rocket Company produces small gasoline-powered engines for model airplanes. Mr. Clemens, Rocket’s CFO, has presented you...
Rocket Company produces small gasoline-powered engines for model airplanes. Mr. Clemens, Rocket’s CFO, has presented you with the following cost information: Direct Materials Inventory, beginning $ 80,000 Direct Materials Inventory, ending $ 122,000 Work in Process Inventory, beginning $ 140,000 Work in Process Inventory, ending $ 95,000 Direct labor $ 780,000 Direct materials purchases $ 940,000 Insurance, factory $ 50,000 Depreciation, factory $ 22,000 Depreciation, executive offices $ 15,000 Indirect labor $ 220,000 Utilities, factory $ 17,000 Utilities, executive offices...
A 0.1326 g sample of magnesium was reacted with oxygen (a combustion reaction) in a bomb...
A 0.1326 g sample of magnesium was reacted with oxygen (a combustion reaction) in a bomb calorimeter. The total heat capacity of the calorimeter is 5,760 J/C. The temperature rise of the calorimeter was 0.570C. a) ) Write the balanced thermochemical reaction equation. b) Calculate the Molar Enthalpy of Combustion, ΔHcomb of magnesium.
1. Glucose will react with oxygen in a laboratory setting using a combustion chamber. The reaction...
1. Glucose will react with oxygen in a laboratory setting using a combustion chamber. The reaction is exergonic, with the release of a large amount of energy in the form of heat and the production of carbon dioxide and water according to the following chemical equation: C6H12O6 + 6O2 → 6CO2 + 6H2O       G = –686 kcal/mol Glucose can also be incubated with cells that completely oxidize glucose, according to the same net chemical equation and with the same...
A combustion reaction is described as a carbon source reacting with oxygen and producing carbon dioxide...
A combustion reaction is described as a carbon source reacting with oxygen and producing carbon dioxide and water. A common example of this reaction is methane reacting with oxygen gas in the following reaction: CH4 (g) + 2O2 (g) -> CO2 (g) + 2H2O (g) What would the standard entropy change be, if 20 g of methane reacted with 20 g of oxygen?
As with any combustion reaction, the products of combusting a hydrocarbon fuel (CxHy) with oxygen (O2)...
As with any combustion reaction, the products of combusting a hydrocarbon fuel (CxHy) with oxygen (O2) are carbon dioxide (CO2) and water (H2O). A mass of 16.89 g for an unknown fuel was combusted in a reaction vessel containing an unknown amount of oxygen. At the end of the reaction, there still remained 16.85 g of the fuel as well as 0.0654 g of water and 0.1198 g of carbon dioxide. The oxygen was completely consumed during the reaction. How...
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT