When methanol, CH3OH, is burned in the presence of oxygen gas, O2 a large amount of heat energy is released. For this reason, it is often used as a fuel in high performance racing cars. The combustion of methanol has the balanced, thermochemical equation
How much methanol, in grams, must be burned to produce 865 kJ of heat? mass:
When 1 mole of methanol is burnt energy generated is 764 kJ of energy.
So when 933 kJ of energy is produced amount of methanol needed is 933/ 764 = 1.22 moles of methanol
Now
No of moles = amount of methanol (in grams)/ molecular mass
So amount of methanol= no of moles* molecular mass
= 1.22* 32= 39.04 grams of methanol must be burnt
When methanol, CH3OH , is burned in the presence of oxygen gas, O2 , a large amount of heat energy is released. For this reason, it is often used as a fuel in high performance racing cars. The combustion of methanol has the balanced, thermochemical equation CH3OH ( g ) + 3/2 O2 ( g ) ⟶ CO2 ( g ) + 2H2O ( l ) Δ H = − 764 kJ How much methanol, in grams, must be burned...
When methanol, CH3OH, is burned in the presence of oxygen gas, O2, a large amount of heat energy is released. For this reason, it is often used as a fuel in high performance racing cars. The combustion of methanol has the balanced, thermochemical equation CH3OH(g)+32O2(g)⟶CO2(g)+2H2O(l)Δ?=−764 kJ How much methanol, in grams, must be burned to produce 807 kJ of heat? mass in grams:
When methanol, CH, OH, is burned in the presence of oxygen gas, 02, a large amount of heat energy is released. For this reason, it is often used as a fuel in high performance racing cars. The combustion of methanol has the balanced, thermochemical equation CH, OH(g) + O2(g) → CO2(g) + 2 H2O(1) AH = -764 kJ How much methanol, in grams, must be burned to produce 609 kJ of heat? mass: mass: g
A quantity of 1.922 g of methanol (CH3OH) was burned in a constant-volume bomb calorimeter. Consequently, the temperature rose by 5.52°C. If the heat capacity of the bomb plus water was 8.75 kJ / °C, calculate the molar heat of combustion of methanol.
A direct methanol Fuel cell operates on Methanol at 60 °C CH3OH is fuel for global reaction CH3OH (1) + 3/202- CO2 + 2H20 (1) Ignoring the heat capacity, calculate the heat potential associated with the above reaction. [Use the table below and definition of Gibbs free energy] CH3OH (1) O2 (gas) CO2 H20 (1) -238.5 KJ/mol O KJ/mol -285.83 KJ/mol 127.19 J/mol.K 205.00 J/mol.K 213.79 J/mol. 69.95 J/mol.K. 969.7kJ/mol 769.9kJ/mol 699.7kJ/mol; 996.7 kJ/mol;
10. Given the themochemical equation for the combustion of methanol. 2 CH3OH(g) + 3 O2(g) ® 2 CO2(g) + 4 H2O(l) DrH = −1453 kJ/mol reaction d. Review the units “kJ/mol reaction”. What does “mole reaction” mean? e. If you produce 857 kJ of heat, how many “mole reactions” occurred? f. Relate the energy of the “mole reaction” to moles of methanol and determine the mass (in grams) of methanol needed.
Methanol (CH3OH) is used as a fuel in race cars. Part A Write a balanced equation for the combustion of liquid methanol in air, assuming H2O(g) as a product. Express your answer as a chemical equation. Identify all of the phases in your answer. SubmitPrevious AnswersRequest Answer Incorrect; Try Again; 5 attempts remaining Part B Calculate the standard enthalpy change for the combustion of 1 mol of liquid methanol, assuming H2O(g) as a product. Express your answer using four significant...
Methanol (CH3OH) burns according to the equation 2CH3OH(l) + 3O2(g) → 2CO2(g) + 4H2O(l), ΔH°rxn = –1454 kJ/mol. A) How much heat, in kilojoules, is given off when 150.0 g of methanol is burned? [ Select ] B) How many grams of CO2 are produced when the amount of heat determined in part A is released? [ Select ] Molar masses: CH3OH = 32.04 g/mol O2 = 32.00 g/mol CO2 = 44.01 g/mol H2O = 18.02 g/mol
Consider the reaction for the combustion of methanol (CH3OH): 2CH3OH+3O2⟶2CO2+4H2O What is the mass of oxygen (O2) that is required to produce 579g of carbon dioxide (CO2)?
9. Certain race cars use methanol (CH3OH; also called wood alcohol) as a fuel. Methanol has a molecular mass of 32.0 g/mol and a density of 0.79 g/mL. The combustion of methanol occurs according to the following equation: 2CH3OH + 3O2 ? 2CO2 + 4H2O In a particular reaction 2.00 L of methanol are reacted with 80.0 kg of oxygen. a. What is the limiting reactant? b. What reactant and how many grams of it are left over? c. How...