Biofuel

Definition

Biofuel is a type of energy source derived from organic materials, such as plant and animal waste. It can be used as an alternative to fossil fuels for generating heat and power.

5 Must Know Facts For Your Next Test

1. Biofuels release energy through combustion, similar to traditional fossil fuels.
2. The enthalpy change ($\Delta H$) of biofuel combustion can be measured using calorimetry.
3. Biofuels are considered renewable because their sources can be replanted or regenerated.
4. Common types of biofuels include ethanol, biodiesel, and biogas.
5. The energy content of biofuels is typically lower than that of conventional fossil fuels but they produce fewer greenhouse gases.

Review Questions

• What is the primary source material for biofuels?
• How does the enthalpy change ($\Delta H$) in biofuel combustion compare to that in fossil fuel combustion?
• Why are biofuels considered more environmentally friendly compared to conventional fossil fuels?

Related terms

Enthalpy: A thermodynamic quantity equivalent to the total heat content of a system. It is represented by the symbol $H$.

$\Delta H$ (Change in Enthalpy): The change in enthalpy during a chemical reaction, indicating whether the process absorbs or releases heat.

Calorimetry: The measurement of heat transfer during chemical reactions or physical changes, often used to determine enthalpy changes.