Question

For research purposes, the need for experimental data tabulating enthalpy, temperature, and pressure under non-standard conditions for the combustion of aluminum and oxygen is crucial. Existing data from sources like NEST provided information for one bar pressure with enthalpy as a function of temperature. However, a comprehensive dataset covering a range of temperatures and pressures is required for interpolation. The request is for:

Can anyone provide or reference an experimental tabulation or spreadsheet data containing enthalpy, temperature, and pressure for aluminum and oxygen combustion under non-standard conditions?

a.Yes, here is an experimental dataset that tabulates enthalpy, temperature, and pressure for aluminum and oxygen combustion under various non-standard conditions.
b.I don't have a specific dataset, but you might find relevant information in the following books or sources.
c.No, there doesn't seem to be a readily available comprehensive dataset for the requested conditions.
d.I'm unsure, but I can provide guidance on where to search or how to conduct experiments to gather the required data.

Answer 1

The standard conditions for thermochemical data tabulation involve a pressure of 1 atm and a concentration of 1 M.

Enthalpies of formation measured under these conditions are called standard enthalpies of formation (ΔH°f), while the enthalpy change when 1 mole of a substance burns under standard state conditions is called the standard enthalpy of combustion (ΔH°c).

Step-by-step explanation:

The standard conditions for which most thermochemical data are tabulated are a pressure of 1 atmosphere (atm) for all gases and a concentration of 1 M for all species in solution (1 mol/L). In addition, each pure substance must be in its standard state, which is usually its most stable form at a pressure of 1 atm at a specified temperature.

Enthalpies of formation measured under these conditions are called standard enthalpies of formation (ΔH°f).

These enthalpies represent the enthalpy change for the formation of 1 mole of a compound from its component elements when the component elements are each in their standard states and are zero by definition for an element in its most stable form.

The enthalpy changes for many types of chemical and physical processes, including combustion reactions, are available in the reference literature.

Standard enthalpy of combustion (ΔH°c) is the enthalpy change when 1 mole of a substance burns (combines vigorously with oxygen) under standard state conditions, and it is sometimes called the 'heat of combustion'.