To calculate the enthalpy change for a reaction, in your case for the combustion of ethane, you can use the standard enthalpies of formation of the species involved in the reaction.

Nov 28, 2016 · For a start you don't calculate it. You want the enthalpy change for the following reaction: C_2H_5OH (l) +3O_2 (g) rarr 2CO_2 (g) + 3H_2O (l) +Delta This is NOT calculated, but measured. …

So you want the enthalpy of combustion of ethane? I make it DeltaH_"combustion"^@=-1569.5*kJ*mol^-1 ...that is we want DeltaH_"rxn"^@ for.. C_2H_6 (g) +7/2O_2 (g ...

Apr 7, 2018 · You mean the reverse of say a combustion reaction? CH_4(g) + 2O_2(g) rarr CO_2(g) + 2H_2O(g) + 890*kJ This is the standard combustion reaction. Now, ordinarily, DeltaH would be listed …

This is the Hess's law In the Hess's law you should add both the reactions like this For example Hess's law states that the addition of total heat absorbed and and released of some reactions is equal to ΔH …

The standard enthalpy of formation for any substance is the change in enthalpy that accompanies the formation of 1 mole of that substance from its contituent elements in their most stable form. Take a …

+"133 kJ/mol" The idea here is that you need to use the change in Gibbs free energy, DeltaG^@, and the change in entropy, DeltaS^@, of the reaction at 161.0^@"C" to determine the change in enthalpy …

DeltaH_"rxn" = -"399.3 kJ" I assume that you mistyped the chemical equation for that reaction, since it's pretty clear that x has to be equal to 2. So, the balanced chemical equation for your reaction is …

Dec 23, 2017 · In a laboratory, 23.5 g of cyclohexane is burned and 5.5 liters of carbon dioxide was obtained ? a) Balance the reaction b) Calculate the reaction yield. d (CO2)= 1.9 g/L Chemistry

Is #K_c# dependent on initial concentrations? At a certain temperature, 0.660 mol of SO3 is placed in a 4.50-L container, according to the reaction: 2SO3 (g) --> 2SO2 (g) + O2 (g), at equilibrium, 0.130 mol …