Calculate the amount of energy released when Butane is burned.

See your post on burning CH4.

To calculate the amount of energy released when butane is burned, you need to know the balanced chemical equation and the enthalpy change of combustion for butane.

The balanced chemical equation for the combustion of butane is:

C4H10 + 13/2 O2 -> 4 CO2 + 5 H2O

The enthalpy change of combustion (ΔHc) for butane is approximately -2878 kJ/mol.

To calculate the amount of energy released, you will need to know the number of moles of butane burned. Once you have that information, you can use the equation:

Energy Released = ΔHc * number of moles of butane

Let's assume you are burning 1 mole of butane:

Energy Released = (-2878 kJ/mol) * 1 mol

Therefore, when 1 mole of butane is burned, approximately 2878 kJ of energy is released.

To calculate the amount of energy released when butane is burned, we need to use the concept of molar enthalpy of combustion.

The molar enthalpy of combustion, denoted as ΔHc, is the enthalpy change that occurs when one mole of a substance is completely burned in excess oxygen. For butane (C4H10), the balanced chemical equation for its combustion is:

2 C4H10(g) + 13 O2(g) → 8 CO2(g) + 10 H2O(g)

To calculate the energy released, we need to consider the enthalpy change for this reaction. The molar enthalpy of combustion of butane, denoted as ΔHc°, is typically provided as a standard enthalpy change in kilojoules (kJ) per mole.

Generally, the molar enthalpy of combustion is a negative value, indicating that energy is released during the combustion process.

To calculate the energy released when burning a specific quantity of butane, you will need the mass of butane burned and the molar mass of butane. The molar mass of butane (C4H10) is approximately 58.12 grams per mole.

Here is an example calculation:

1. Determine the molar enthalpy of combustion of butane (ΔHc°). Assume it is -2877 kJ/mol. (Note: This value may vary depending on the source and conditions.)

2. Convert the mass of butane (in grams) to moles. Let's say we have 25 grams.

Moles of butane = mass / molar mass
Moles of butane = 25 g / 58.12 g/mol
Moles of butane ≈ 0.43 mol (rounded to two decimal places)

3. Calculate the energy released using the formula:

Energy released = moles of butane * ΔHc°
Energy released = 0.43 mol * -2877 kJ/mol
Energy released ≈ -1237 kJ (rounded to whole numbers)

Therefore, approximately 1237 kJ of energy is released when 25 grams of butane is burned.

Remember to use the correct values for the molar enthalpy of combustion and the molar mass of butane, as these may vary depending on your specific context or source.