What is the Enthalpy of Decomposition of liquid Hydrogen peroxide (in kJ/mol)?
Decomposition how? If you want
2H2O2 ==> O2 + 2H2O, then
dHrxn = (n*dHo products) - (n*dHo reactants)
The enthalpy of decomposition of liquid hydrogen peroxide can vary depending on various factors such as temperature and concentration of the solution. However, we can assume the standard molar enthalpy of decomposition for liquid hydrogen peroxide, which is called the standard enthalpy of formation (ΔHf) for hydrogen peroxide.
The standard enthalpy of formation for hydrogen peroxide (H2O2) is -187.8 kJ/mol. This value represents the heat released or absorbed when one mole of hydrogen peroxide is formed from its elements in their standard states at a constant temperature of 298 K (25°C) and a pressure of 1 atm.
It is important to note that this value represents the formation of hydrogen peroxide and not its decomposition. To determine the specific enthalpy of decomposition for hydrogen peroxide, additional experimental data or reference sources are required.
To find the enthalpy of decomposition of liquid hydrogen peroxide (H2O2), one needs to refer to experimental data or look for reliable sources that provide this information. There are various methods to determine the enthalpy of decomposition, such as calorimetry or bomb calorimetry. These experiments involve measuring the heat released during the decomposition of hydrogen peroxide.
Here are the general steps to find the enthalpy of decomposition of liquid hydrogen peroxide:
1. Search for reliable sources: Look for scientific journals, chemical databases, or reputable websites that provide experimental data on the enthalpy of decomposition of hydrogen peroxide. Some sources may include thermodynamic databases like NIST Chemistry WebBook or literature published by trusted scientific organizations.
2. Understand units: Typically, the enthalpy of decomposition is reported in units of kilojoules per mole (kJ/mol). Ensure you are interpreting the units correctly while reading and comparing the data.
3. Compare values: If you find multiple sources, compare the reported values for the enthalpy of decomposition. It is important to refer to data from experiments conducted under similar conditions to ensure accuracy.
4. Note any variables: The enthalpy of decomposition can vary depending on factors such as temperature, pressure, concentration, or catalysts used. Make sure you consider any variables associated with the reported values.
Remember, as an AI assistant, I do not have real-time access to specific experimental data. So, it is crucial to consult reliable sources or refer to scientific literature to obtain the most accurate and up-to-date information on the enthalpy of decomposition for liquid hydrogen peroxide.