Acetylene (C2H2) undergoes combustion in excess oxygen to generate gaseous carbon dioxide and water. Given (delta)H...

Acetylene (C2H2) undergoes combustion in excess oxygen to generate gaseous carbon dioxide and water. Given (delta)H degrees F[CO2(g)] = -393.5 kJ/mol, (delta)H degrees F[H2O(g)] = -241.8 kJ/mol, and (delta)H degrees F [C2H2(g)] = 226.6 kJ/mol, how much energy is released (kJ) when 10.5 moles of acetylene is burned?

		2.5108 MJ
		26.4 MJ
		13.2 MJ
		52.7 MJ
		9.05 MJ options listed above

Expert Solution

2C2H2 (g)+ 3O2(g) -----------> 4Co2(g) +2H2O(g)

H rxn = Hf products - Hf reactants

= 4*-393.5+2*-241.8- (2*226.6+0)

= -2510.8Kj

2C2H2 (g)+ 3O2(g) -----------> 4Co2(g) +2H2O(g) H rxn = -2510.8KJ

2 moles of C2H2 released energy is -2510.8KJ

10.5 moles of C2H2 released energy is = -2510.8*10.5/2 = -13181.7KJ = 13.2*10^6J = 13.2MJ >>>>>answer

queen_honey_blossom answered 2 years ago

Gaseous butane will react with gaseous oxygen to produce gaseous carbon dioxide and gaseous water ....

Gaseous butane will react with gaseous oxygen to produce gaseous carbon dioxide and gaseous water . Suppose 5.23 g of butane is mixed with 12. g of oxygen. Calculate the maximum mass of carbon dioxide that could be produced by the chemical reaction. Be sure your answer has the correct number of significant digits.

The combustion of 15.3g Acetylene, C2H2 in 39.4g of oxygen yields how much water? Label the...

The combustion of 15.3g Acetylene, C2H2 in 39.4g of oxygen yields how much water? Label the limiting and excess reactants. Please help! I don't get it.

Gaseous methane will react with gaseous oxygen to produce gaseous carbon dioxide and gaseous water. Suppose...

Gaseous methane will react with gaseous oxygen to produce gaseous carbon dioxide and gaseous water. Suppose 15.7 g of methane is mixed with 34. g of oxygen. Calculate the maximum mass of carbon dioxide that could be produced by the chemical reaction. Be sure your answer has the correct number of significant digits.

The combustion of liquid octane, C8H18, in the presence of gaseous oxygen yields carbon dioxide and...

The combustion of liquid octane, C8H18, in the presence of gaseous oxygen yields carbon dioxide and liquid water. 2C8H18(l)+25O2(g)-------------->16CO2(g)+18H2O(l) How many grams of water are produced by the reaction of 17.0 g of octane?(fill in the blank) _________ g H2O

Liquid hexane reacts with gaseous oxygen gas to produce gaseous carbon dioxide and gaseous water. If...

Liquid hexane reacts with gaseous oxygen gas to produce gaseous carbon dioxide and gaseous water. If 6.55g of carbon dioxide is produced from the reaction of 3.45g of hexane and 17.1g of oxygen gas, calculate the percent yield of carbon dioxide. Round your answer to 3 significant figures.

The combustion of acetylene C2H2 is a spontaneous reaction given by the equation: 2C2H2 (g) +...

The combustion of acetylene C2H2 is a spontaneous reaction given by the equation: 2C2H2 (g) + SO2(g) --> 4CO2 (g) + 2 H2O(l) As expected for a combustion the a combustion the reaction is exothermic. a.) What is the sign of Delta H? b.) What do you expect for the sign of Delta S? c.) Explain the spontaneity of the reaction in terms of the enthalpy and entropy changes. Please show work and explain

Gaseous ethane CH3CH3 will react with gaseous oxygen O2 to produce gaseous carbon dioxide CO2 and...

Gaseous ethane CH3CH3 will react with gaseous oxygen O2 to produce gaseous carbon dioxide CO2 and gaseous water H2O . Suppose 14. g of ethane is mixed with 37.6 g of oxygen. Calculate the minimum mass of ethane that could be left over by the chemical reaction.

Gaseous methane CH4 will react with gaseous oxygen O2 to produce gaseous carbon dioxide CO2 and...

Gaseous methane CH4 will react with gaseous oxygen O2 to produce gaseous carbon dioxide CO2 and gaseous water H2O. Suppose 0.32 g of methane is mixed with 0.909 g of oxygen. Calculate the maximum mass of water that could be produced by the chemical reaction.

Gaseous butane CH3CH22CH3 will react with gaseous oxygen O2 to produce gaseous carbon dioxide CO2 and...

Gaseous butane CH3CH22CH3 will react with gaseous oxygen O2 to produce gaseous carbon dioxide CO2 and gaseous water H2O . Suppose 1.74 g of butane is mixed with 12. g of oxygen. Calculate the minimum mass of butane that could be left over by the chemical reaction. Be sure your answer has the correct number of significant digits.

Gaseous ethane (CH3CH3) will react with gaseous oxygen (O2) to produce gaseous carbon dioxide (CO2) and...

Gaseous ethane (CH3CH3) will react with gaseous oxygen (O2) to produce gaseous carbon dioxide (CO2) and gaseous water (H2O). Suppose 26. g of ethane is mixed with 180. g of oxygen. Calculate the maximum mass of water that could be produced by the chemical reaction. Be sure your answer has the correct number of significant digits.

Question